APA (7th ed.) Zitazioa

HAVENS, R. (1966). Economics: Principles of income, prices and. Macinillan.

Chicago Style (17th ed.) Zitazioa

HAVENS, R. Economics: Principles of Income, Prices and. New York: Macinillan, 1966.

MLA (9th ed.) Zitazioa

HAVENS, R. Economics: Principles of Income, Prices and. Macinillan, 1966.