Cita APA (7th ed.)

Cramer, G. L., .Cramer, G. L., & .Heid, W. G. (1983). Grain marketing economics. John Wiley & Sons.

Cita Chicago (17th ed.)

Cramer, Gail L., Gail L. .Cramer, i Walter G. .Heid. Grain Marketing Economics. New York: John Wiley & Sons, 1983.

Cita MLA (9th ed.)

Cramer, Gail L., et al. Grain Marketing Economics. John Wiley & Sons, 1983.