Gaya APA

kons., D, R, M, M, S. (1990). Economics: Principles, Problems, and Policies . New York: mcgraw-hill publishing company.

Gaya MLA

kons., Dra., Rahmiwati, Marsinun,, M., Si.. "Economics: Principles, Problems, and Policies". New York: mcgraw-hill publishing company, 1990. Text.