APA-referens (7:e uppl.)
Colón, C. (1893). Letter of Christopher Columbus to Rafael Sanchez, written on board the Caravel while returning from his first voyage. W.H. Lowdermilk.
Chicago-referens (17:e uppl.)
Colón, Cristóbal. Letter of Christopher Columbus to Rafael Sanchez, Written on Board the Caravel While Returning from His First Voyage. Chicago: W.H. Lowdermilk, 1893.
MLA-referens (9:e uppl.)
Colón, Cristóbal. Letter of Christopher Columbus to Rafael Sanchez, Written on Board the Caravel While Returning from His First Voyage. W.H. Lowdermilk, 1893.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.