Julius Popper (Romanian Wikipedia)

Macdonald, Theodore: In Dire Straits, pp. 28, ReVista, the Harvard Review of Latin America. Volume VIII, 3, Spring 2009 http://www.drclas.harvard.edu/revistaweb/earthsky/discovery/macdonald Arhivat în 11 martie 2011, la Wayback Machine.

hotnews.ro (Global: 3,734^th place; Romanian: 18^th place)

„Jurnalul Național, 26 iulie 2004 - Cei mai bogați români din lume”. Arhivat din original la 29 septembrie 2007. Accesat în 23 noiembrie 2006.

intercontinentalcry.org (Global: low place; Romanian: low place)

en Ahni: Genocide in Chile: a monument is not enough, Intercontinental Cry, Sep 2, 2007. http://intercontinentalcry.org/genocide-in-chile-a-monument-is-not-enough/

jstor.org (Global: 26^th place; Romanian: 69^th place)

en Ansel, Bernard D.: European Adventurer in Tierra del Fuego: Julio Popper, Hispanic American Historical Review, pp. 89-110, Vol. 50, No. 1, publ. Duke University Press, Feb. 1970 (Stable URL: http://www.jstor.org/stable/2511634).

lamovidarg.com.ar (Global: low place; Romanian: low place)

es Actividades por el Dia del Aborigen Fuegüino, 25 Noviembre 2007, http://lamovidarg.com.ar/index.php?option=com_content&task=view&id=753&Itemid=136/^{[nefuncțională]}

nytimes.com (Global: 7^th place; Romanian: 25^th place)

movies.nytimes.com

en „Tierra del Fuego”, fim de dramă, aventuri și epocă, co-producție: Chile, Italia, Spania, 2000. [1]

patagonia-calling.com (Global: low place; Romanian: low place)

en 888: Patagonia History, http://www.patagonia-calling.com/patagonia-history.htm (accesat: 20 dec. 2011)

patlibros.org (Global: low place; Romanian: low place)

maps from "The Sun" (New York, NY), 26 August 1894, https://patlibros.org/clip/pix/PL001.htm

pcgs.com (Global: low place; Romanian: low place)

en McCarthy, David: Julius Popper and the Coins of the Argentine Gold Rush, 27 octombrie 2009, http://www.pcgs.com/articles/detail/5915 (accesionat: 20 dec. 2011)

romaniancoins.org (Global: low place; Romanian: 597^th place)

en ***: Romanian coin - 1 gram gold coin - Julius Popper, http://romaniancoins.org/un_gramo_popper.html
Timbru 1986

taringa.net (Global: low place; Romanian: low place)

es Alem, Leandro N.: Julius Popper - El Emperador de la Patagonia, http://www.taringa.net/posts/apuntes-y-monografias/10535300/Julius-Popper---El-Emperador-de-la-Pata Arhivat în 14 octombrie 2013, la Wayback Machine. (acces. Dec. 2011)

tierradelfuego.org.ar (Global: low place; Romanian: low place)

es Revista Raices, La estampilla de Popper^{[nefuncțională – arhivă]}

vacantesicalatorii.ro (Global: low place; Romanian: 4,473^rd place)

Neguț, Silviu: Iuliu Popper – Un român, primul și cel mai mare explorator al interiorului Țării de Foc, 24 sept. 2010, http://www.vacantesicalatorii.ro/modules/revista/articole/articol.php?artID=2338/ Arhivat în 28 februarie 2014, la Wayback Machine.

web.archive.org (Global: 1^st place; Romanian: 1^st place)

Neguț, Silviu: Iuliu Popper – Un român, primul și cel mai mare explorator al interiorului Țării de Foc, 24 sept. 2010, http://www.vacantesicalatorii.ro/modules/revista/articole/articol.php?artID=2338/ Arhivat în 28 februarie 2014, la Wayback Machine.
es Alem, Leandro N.: Julius Popper - El Emperador de la Patagonia, http://www.taringa.net/posts/apuntes-y-monografias/10535300/Julius-Popper---El-Emperador-de-la-Pata Arhivat în 14 octombrie 2013, la Wayback Machine. (acces. Dec. 2011)
„Jurnalul Național, 26 iulie 2004 - Cei mai bogați români din lume”. Arhivat din original la 29 septembrie 2007. Accesat în 23 noiembrie 2006.
en Pictures from an album presented by Popper in 1887 to the president Arhivat în 4 martie 2009, la Wayback Machine. Miguel Juárez Celman.
es Golab, Raine: Popper el magnífico, http://flyfishing-argentina.com/rinconcultural/popper.html Arhivat în 17 decembrie 2006, la Wayback Machine.
es Revista Raices, La estampilla de Popper^{[nefuncțională – arhivă]}
Macdonald, Theodore: In Dire Straits, pp. 28, ReVista, the Harvard Review of Latin America. Volume VIII, 3, Spring 2009 http://www.drclas.harvard.edu/revistaweb/earthsky/discovery/macdonald Arhivat în 11 martie 2011, la Wayback Machine.

wikidata.org (Global: 43^rd place; Romanian: 2^nd place)

Bibliothèque nationale de France. „Julius Popper” (în franceză). Autoritatea BnF[*]. Wikidata Q19938912. Accesat în 10 octombrie 2015.

Julius Popper (Romanian Wikipedia)

antropologiavisual.cl (Global: low place; Romanian: low place)

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jstor.org (Global: 26th place; Romanian: 69th place)

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wikidata.org (Global: 43rd place; Romanian: 2nd place)

bnf.fr (Global: 124^th place; Romanian: 7^th place)

harvard.edu (Global: 18^th place; Romanian: 27^th place)

hotnews.ro (Global: 3,734^th place; Romanian: 18^th place)

jstor.org (Global: 26^th place; Romanian: 69^th place)

nytimes.com (Global: 7^th place; Romanian: 25^th place)

romaniancoins.org (Global: low place; Romanian: 597^th place)

vacantesicalatorii.ro (Global: low place; Romanian: 4,473^rd place)

web.archive.org (Global: 1^st place; Romanian: 1^st place)

wikidata.org (Global: 43^rd place; Romanian: 2^nd place)