Cita APA (7a ed.)

Gwartney, J. D., Stroup, R., & Studenmund, A. (1990). Economics: Private and public choice (5th ed.). Harcourt Brace Jovanovich.

Cita Chicago Style (17a ed.)

Gwartney, James D., Richard Stroup, y A.H Studenmund. Economics: Private and Public Choice. 5th ed. San Diego [etc.]: Harcourt Brace Jovanovich, 1990.

Cita MLA (9a ed.)

Gwartney, James D., et al. Economics: Private and Public Choice. 5th ed. Harcourt Brace Jovanovich, 1990.