Continents: What is a Continent?. National Geographic. Arkivita el la originalo je 2009-06-29. Alirita 2014-09-08 . "Most people recognize seven continents—Asia, Africa, North America, South America, Antarctica, Europe, and Australia, from largest to smallest—although sometimes Europe and Asia are considered a single continent, Eurasia."
Continents: What is a Continent?. National Geographic. Arkivita el la originalo je 2009-06-29. Alirita 2014-09-08 . "Most people recognize seven continents—Asia, Africa, North America, South America, Antarctica, Europe, and Australia, from largest to smallest—although sometimes Europe and Asia are considered a single continent, Eurasia."
(en angla) Herodoto. Tradukita de George Rawlinson (2000). The Histories of Herodotus of Halicarnassus[1]. Ames, Iowa: Omphaloskepsis, libro 2, p. 18.
(en angla) Herodoto. Tradukita de George Rawlinson (2000). The Histories of Herodotus of Halicarnassus[2]. Ames, Iowa: Omphaloskepsis, libro 4, p. 38. «I cannot conceive why three names... should ever have been given to a tract which is in reality one».
