Gaya APA

Drummond, D, D, D, R. (1988). People on Earth (A World Geography) . Jakarta: Scoot, Foresman and Company, Glenview, Illinois.

Gaya MLA

Drummond, D., Drummond, Dan, R. "People on Earth (A World Geography)". Jakarta: Scoot, Foresman and Company, Glenview, Illinois, 1988. Text.