Gaya APA

Kuhlman, John M.. (1972). Studying economics (text). California: Goodyear Publishing Company.

Gaya Chicago

Kuhlman, John M.. Studying economics. text California: Goodyear Publishing Company, 1972. .

Gaya MLA

Kuhlman, John M.. Studying economics. text California: Goodyear Publishing Company, 1972. .

Gaya Turabian

Kuhlman, John M.. Studying economics. text California: Goodyear Publishing Company, 1972. .