Gaya APA

Jacobs, J, A, D, K, A. (1980). Civilizations of the Past : Peoples and Cultures . Amerika Serikat: Globe Book Company.

Gaya MLA

Jacobs, Jack, Abramowitz, Dan, Kenneth, A.. "Civilizations of the Past : Peoples and Cultures". Amerika Serikat: Globe Book Company, 1980. Text.