APA aipamena

Cramer Gail C. (2001). Agricultural Economics (8th.). John Wiley & Sons Inc.

Chicago Style aipamena

Cramer Gail C. Agricultural Economics. 8th. New York: John Wiley & Sons Inc, 2001.

MLA aipamena

Cramer Gail C. Agricultural Economics. 8th. John Wiley & Sons Inc, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.