Rudolf II, Holy Roman Emperor (English Wikipedia)

Stephens, Henry Morse (1903). The story of Portugal. G.P. Putnam's Sons. pp. 125, 139, 279. ISBN 978-0722224731. Archived from the original on 2 May 2020. Retrieved 11 July 2018.

britannica.com

"Don Julius D'Austria and his Fate". State Castle and Chateau Český Krumlov. Archived from the original on 19 December 2017. Retrieved 4 January 2013.

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Press, Volker (1990). "Maximilian II.". Neue Deutsche Biographie (in German). Vol. 16. Berlin: Duncker & Humblot. pp. 471–475. (full text online).

"Wisdom and Strength". collections.frick.org. Archived from the original on 10 August 2020. Retrieved 26 July 2020.

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Kieval, Hillel J. (1997). "Pursuing the Golem of Prague: Jewish Culture and the Invention of a Tradition". Modern Judaism. 17 (1): 5. doi:10.1093/mj/17.1.1. ISSN 0276-1114. JSTOR 1396572.
Hayward, J. F., 1980. A Chair from the 'Kunstkammer' of the Emperor Rudolf II. The Burlington Magazine, 122(927), 428–432. [1] Archived 2020-03-11 at the Wayback Machine

"Prague during the Rule of Rudolf II (1583–1612)". www.metmuseum.org. Archived from the original on 2 December 2008. Retrieved 26 July 2020.

Wilson, Wendell (1994). Wilson, Wendell (ed.). The History of Mineral Collecting, 1530–1799. Mineralogical Record. Archived from the original on 26 March 2013. Retrieved 29 September 2012.

"Rodòlfo II Imperatore nell'Enciclopedia Treccani". www.treccani.it. Archived from the original on 7 November 2019. Retrieved 26 July 2020.

"Rodòlfo II Imperatore nell'Enciclopedia Treccani". www.treccani.it. Archived from the original on 7 November 2019. Retrieved 26 July 2020.
"Don Julius D'Austria and his Fate". State Castle and Chateau Český Krumlov. Archived from the original on 19 December 2017. Retrieved 4 January 2013.
Wilson, Wendell (1994). Wilson, Wendell (ed.). The History of Mineral Collecting, 1530–1799. Mineralogical Record. Archived from the original on 26 March 2013. Retrieved 29 September 2012.
Hayward, J. F., 1980. A Chair from the 'Kunstkammer' of the Emperor Rudolf II. The Burlington Magazine, 122(927), 428–432. [1] Archived 2020-03-11 at the Wayback Machine
"Prague during the Rule of Rudolf II (1583–1612)". www.metmuseum.org. Archived from the original on 2 December 2008. Retrieved 26 July 2020.
"Wisdom and Strength". collections.frick.org. Archived from the original on 10 August 2020. Retrieved 26 July 2020.
Ivo Purš; Vladimír Karpenko (2016). Alchemy and Rudolf II. Searching for the secrets of nature in Central Europe in the 16th and 17th centuries. Artefactum. ISBN 978-80-86890-33-3. Archived from the original on 3 September 2019. Retrieved 25 October 2017.
Stephens, Henry Morse (1903). The story of Portugal. G.P. Putnam's Sons. pp. 125, 139, 279. ISBN 978-0722224731. Archived from the original on 2 May 2020. Retrieved 11 July 2018.

Priebatsch, Felix (1908). "Wladislaw II.". Allgemeine Deutsche Biographie (in German). Vol. 54. Leipzig: Duncker & Humblot. pp. 688–696.

Chisholm, Hugh, ed. (1911). "Rudolph II." . Encyclopædia Britannica. Vol. 23 (11th ed.). Cambridge University Press. p. 817.
Wurzbach, Constantin von, ed. (1861). "Habsburg, Maria von Spanien" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 7. p. 19 – via Wikisource.
Wurzbach, Constantin von, ed. (1861). "Habsburg, Philipp I. der Schöne von Oesterreich" . Biographisches Lexikon des Kaiserthums Oesterreich [Biographical Encyclopedia of the Austrian Empire] (in German). Vol. 7. p. 112 – via Wikisource.
Chisholm, Hugh, ed. (1911). "Joanna" . Encyclopædia Britannica. Vol. 15 (11th ed.). Cambridge University Press.