Gaya APA

Kownslar, A, O., Smart, T, L. (1977). People and Our World: A Study Of World History . London: Holt, Rinehart, and Winston.

Gaya MLA

Kownslar, Allan, O.., Smart, Terry, L.. "People and Our World: A Study Of World History". London: Holt, Rinehart, and Winston, 1977. Text.