Jackson, K. David
Builders of the Oceans
Portuguese Pavilion Expo'98, 1997
 Buku Teks SO
Bethencourt, Francisco
Historia da expansao Portuguesa : a formaqao do imperio (1415-1570)
Temas E. Debates, 1998
 Buku Referensi
Barreto, Luis Filipe
Portugal : pioneiro do dialogo Norte-Sul pionnier du dialogue Nord-Sud a pioneer of the North-South dialogue
Imprensa Nacional, 1988
 Buku Referensi
Churchill, Winston, Sir, 1874-1965
A history of the english-speaking peoples; Volume II : the new world
Dodd, Mead, 1956
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Studies in British history / by Chester Kirby... [et.al.]; editor, Cornelius William de Kiewiet
by Chester Kirby ... [and others]; editor, Cornelius William de Kiewiet
Iowa University Press, 1941
 Buku Teks SO