Gaya APA

Boehm, R, G., P, I, A, D, G, I, H, F. (2000). Geography: the world and its people volume 2 . New York: .

Gaya MLA

Boehm, Richard, G., P, I., Armstrong,, David, G, II., Hunkins,, Francis. "Geography: the world and its people volume 2". New York: , 2000. Text.