APA (7th ed.) Zitazioa

Swan, C. (1979). Economics: Principles and policy. Harcourt Brace Jovanovich.

Chicago Style (17th ed.) Zitazioa

Swan, Craig. Economics: Principles and Policy. Nueva York: Harcourt Brace Jovanovich, 1979.

MLA (9th ed.) Zitazioa

Swan, Craig. Economics: Principles and Policy. Harcourt Brace Jovanovich, 1979.