Frederick II, Holy Roman Emperor (English Wikipedia)

Kantorowicz 1937, p. 8. Kantorowicz, Ernst (1937). Frederick the Second, 1194–1250. New York: Frederick Ungar.
Kantorowicz 1937, p. 11. Kantorowicz, Ernst (1937). Frederick the Second, 1194–1250. New York: Frederick Ungar.
Honorius III. "Ad Fredericum Romanorum Imperatorem". In Medii Aevi Bibliotheca Patristica Tomus Quartus, edited by César Auguste Horoy, 28–29. Paris: Imprimerie de la Bibliothèque Ecclésiastique, 1880. Archive.org
Peters, ed. (1971). "Roger of Wendover". Christian Society and the Crusades. Philadelphia: University of Pennsylvania Press. ISBN 9780812276442.
Ralph Henry Carless Davis, Robert Ian Moore (1957). A History of Medieval Europe.
Cantor, Norman F. (1993). The Civilization of the Middle Ages. HarperCollins. p. 458. ISBN 9780060170332.
Coulton, C. G. (1907). From St. Francis to Dante : translations from the chronicle of the Franciscan Salimbene, 1221–1288 with notes and illustrations from other medieval sources. London: Nutt.
Salimbene de Adam (1942). Cronica. Vol. 1. Bari: G. Laterza.
Rashdall, Hastings (1895). The Universities of Europe in the Middle Ages. Clarendon Press. p. 85. Retrieved 20 November 2016. The physician [...] was not allowed to sell his own drugs ('nec ipse etiam habebit propriam stationem').

bestofsicily.com

Sicilian Peoples: The Jews of Sicily by Vincenzo Salerno

blackcentraleurope.com

"The emperor's retinue (1194) – Black Central Europe". Black Central Europe – We bring you over 1000 years of Black history in the German-speaking lands and show you why it matters right now. 21 April 2016. Retrieved 9 August 2021.
"Johannes dictus Morus (d. 1254) – Black Central Europe". Black Central Europe – We bring you over 1000 years of Black history in the German-speaking lands and show you why it matters right now. 7 April 2016. Retrieved 9 August 2021.
"Crowned Moors on crests (ca. 1263-1400)". Black Central Europe. 7 July 2016. Retrieved 9 August 2021.

books.google.com

Gerlini, Edoardo (2014). The Heian Court Poetry as World Literature: From the Point of View of Early Italian Poetry. Firenze University Press. p. 2. ISBN 978-88-6655-600-8. Retrieved 2 June 2022.
Lerner, Robert E. (11 September 2018). Ernst Kantorowicz: A Life. Princeton University Press. p. 115. ISBN 978-0-691-18302-2. Retrieved 2 June 2022.
Hourihane, Colum (2012). The Grove Encyclopedia of Medieval Art and Architecture. Oxford University Press. p. 342. ISBN 978-0-19-539536-5. Retrieved 2 June 2022.
Sammartino, Peter; Roberts, William (1 January 2001). Sicily: An Informal History. Associated University Presse. ISBN 9780845348772.
Stürner, Wolfgang (1997). Friedrich II.: Die Königsherrschaft in Sizilien und Deutschland : 1194–1220. Teil 1 (in German). Primus Verlag. p. 83. ISBN 978-3-89678-022-5. Retrieved 19 January 2023.
Rader, Olaf B. (2012). Kaiser Friedrich II (in German). C.H.Beck. pp. 11, 12. ISBN 978-3-406-64051-3. Retrieved 19 January 2023.
Houben, Hubert (2008). Kaiser Friedrich II.: 1194–1250 : Herrscher, Mensch und Mythos (in German). W. Kohlhammer Verlag. p. 29. ISBN 978-3-17-018683-5. Retrieved 19 January 2023.
May, Timothy (2016). The Mongol Empire: A Historical Encyclopedia [2 volumes]: A Historical Encyclopedia. ABC-CLIO. p. 1. ISBN 978-1-61069-340-0.
Najemy, J.M. (2008). A History of Florence, 1200 - 1575. Wiley. p. 33. ISBN 978-1-4051-7846-4. Retrieved 2 March 2023.
Carol Lansing and Edward D. English, ed. (2012). A Companion to the Medieval World. John Wiley & Sons. p. 4. ISBN 9781118499467.
"Monachi Sancti Albani, Chronica Majora, Matthew of Paris, p. 572
Huillard-Bréholles, JLA (1861). Historia diplomatica Friderica Secundi. Vol. 6. Henricus. pp. 670–672.

britishmuseum.org

British Museum Collection

clueb.com

CLUEB – Scheda Pubblicazione Archived 19 May 2008 at the Wayback Machine

csun.edu

Adams, John P (18 September 2014). "Sede Vacante 1241–1243". csun.edu. Retrieved 19 December 2014.

d-nb.info

Mamsch, Stefanie (2012). Kommunikation in der Krise Könige und Fürsten im deutschen Thronstreit (1198–1218). Münster: Verl.-Haus Monsenstein und Vannerdat. p. 56. ISBN 978-3-8405-0071-8.
Weltecke, Dorothea (2011). Feuchter, Jörg (ed.). Emperor Frederick II, »Sultan of Lucera", "Friend of the Musilims«, Promoter of Cultural Transfer: Controversies and Suggestions. Frankfurt. p. 88. ISBN 9783593394046.{{cite book}}: CS1 maint: location missing publisher (link)

doi.org

Köhler, Walther [in German] (1903). "Emperor Frederick II., The Hohenstaufe". The American Journal of Theology. 7 (2): 225–248. doi:10.1086/478355. JSTOR 3153729.
Köhler, Walther (1903). "Emperor Frederick II., The Hohenstaufe". The American Journal of Theology. 7 (2): 229. doi:10.1086/478355. ISSN 1550-3283. JSTOR 3153729.
Pybus 1930, pp. 155–161. Pybus, H. J. (1930). "The Emperor Frederick II and the Sicilian Church". Cambridge Historical Journal. 3 (2): 134–163. doi:10.1017/s1474691300002444.
Haskins, C. H. (July 1927). "The Latin Literature of Sport". Speculum. 2 (3): 244. doi:10.2307/2847715. JSTOR 2847715. S2CID 162301922.

elfinspell.com

Cronica, Giovanni Villani Book VI e. 1. (Rose E. Selfe's English translation)

fiu.edu

FIU.edu

fordham.edu

Medieval Sourcebook: Salimbene: On Frederick II, 13th Century

jstor.org

Köhler, Walther [in German] (1903). "Emperor Frederick II., The Hohenstaufe". The American Journal of Theology. 7 (2): 225–248. doi:10.1086/478355. JSTOR 3153729.
Köhler, Walther (1903). "Emperor Frederick II., The Hohenstaufe". The American Journal of Theology. 7 (2): 229. doi:10.1086/478355. ISSN 1550-3283. JSTOR 3153729.
Haskins, C. H. (July 1927). "The Latin Literature of Sport". Speculum. 2 (3): 244. doi:10.2307/2847715. JSTOR 2847715. S2CID 162301922.

newadvent.org

"Catholic Encyclopedia: Frederick II". www.newadvent.org. Retrieved 27 September 2020.

nih.gov

ncbi.nlm.nih.gov

Walsh, James J. (1935). "The Earliest Modern Law for the Regulation of the Practice of Medicine". Bulletin of the New York Academy of Medicine. Aug 11(8) (8): 521–527. PMC 1965858. PMID 19311966.

pubmed.ncbi.nlm.nih.gov

Walsh, James J. (1935). "The Earliest Modern Law for the Regulation of the Practice of Medicine". Bulletin of the New York Academy of Medicine. Aug 11(8) (8): 521–527. PMC 1965858. PMID 19311966.

regesta-imperii.de

regesten.regesta-imperii.de

Regesta Imperii, (RI V) n. 3210, http://regesten.regesta-imperii.de/ Archived 17 July 2009 at the Wayback Machine

semanticscholar.org

api.semanticscholar.org

Haskins, C. H. (July 1927). "The Latin Literature of Sport". Speculum. 2 (3): 244. doi:10.2307/2847715. JSTOR 2847715. S2CID 162301922.

skyscript.co.uk

Little, Kirk, citing: Campion, Nicholas (2009). The Medieval And Modern Worlds. A History of Western Astrology. Vol. II. Continuum Books. ISBN 978-1-4411-8129-9. Bonatti, for instance, was perhaps the most famous astrologer of his day and apparently advised Frederick II on military matters.

splendidsicily.com

Gaetano Cipolla: "The language they used became the standard for poetry in all of Italy and was used even by poets who were not Sicilian. In fact, Dante Alighieri acknowledged the importance of the new language by saying that for the first 150 years of Italian literature what poetry was written was written in Sicilian." https://www.splendidsicily.com/audio/giacomo-da-lentini-and-the-sicilian-school-of-poetry/ .

stupormundi.it

"Ma l'imperatore svevo fu conservatore o innovatore?". Archived from the original on 29 April 2015.

treccani.it

Kamp 1995. Kamp, N (1995). "Federico II di Svevia, imperatore, re di Sicilia e di Gerusalemme, re dei Romani". Dizionario Biografico degli Italiani (in Italian). Vol. 45. Treccani. Retrieved 26 May 2019.
Kamp 1975. Kamp, N (1975). "Capocci, Raniero (Raynerius de Viterbio, Rainerius, Ranerius, Reinerius)". Dizionario Biografico degli Italiani (in Italian). Vol. 18. Treccani. Retrieved 20 June 2013.
"Federico II, figli", Enciclopedia Federiciana (Istituto dell'Enciclopedia Italiana, 2005).
Ernst Voltmer, "Federico d'Antiochia" Dizionario Biografico degli Italiani 45 (1995).

ville-selestat.fr

bhnumerique.ville-selestat.fr

Studer, Marie-Josèphe (2007). "Frédéric II de Hohenstaufen". Les Amis de la Bibliothèque Humaniste de Selestat. p. 65. Retrieved 19 January 2023.

web.archive.org

"Ma l'imperatore svevo fu conservatore o innovatore?". Archived from the original on 29 April 2015.
Regesta Imperii, (RI V) n. 3210, http://regesten.regesta-imperii.de/ Archived 17 July 2009 at the Wayback Machine
Papal bull of excommunication of Frederick II
CLUEB – Scheda Pubblicazione Archived 19 May 2008 at the Wayback Machine

wikipedia.org

de.wikipedia.org

Köhler, Walther [in German] (1903). "Emperor Frederick II., The Hohenstaufe". The American Journal of Theology. 7 (2): 225–248. doi:10.1086/478355. JSTOR 3153729.

worldcat.org

Köhler, Walther (1903). "Emperor Frederick II., The Hohenstaufe". The American Journal of Theology. 7 (2): 229. doi:10.1086/478355. ISSN 1550-3283. JSTOR 3153729.