APA aipamena

William j Promersberge. (1979). Modern Farm Power (3thd.). Roston Publishing Company.

Chicago Style aipamena

William j Promersberge. Modern Farm Power. 3thd. Roston Publishing Company, 1979.

MLA aipamena

William j Promersberge. Modern Farm Power. 3thd. Roston Publishing Company, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.