Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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