Swan, C. (1979). Economics: Principles and policy. Harcourt Brace Jovanovich.
Chicago Style (17th ed.) ZitazioaSwan, Craig. Economics: Principles and Policy. Nueva York: Harcourt Brace Jovanovich, 1979.
MLA (9th ed.) ZitazioaSwan, Craig. Economics: Principles and Policy. Harcourt Brace Jovanovich, 1979.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.