Gaya APA

markham, C, R., guinemard, F. (2015). The lands of silence: a history of artic and antartic exploration . New York: Cambridge University Press.

Gaya MLA

markham, Clements, R., guinemard, F.h.h.. "The lands of silence: a history of artic and antartic exploration". New York: Cambridge University Press, 2015. Text.