Hafez, E. S. E. (1962). Reproduction in Farm Animals (4th ed.). Lea & Febiger.
Cita Chicago (17th ed.)Hafez, E. S. E. Reproduction in Farm Animals. 4th ed. Philadelpha: Lea & Febiger, 1962.
Cita MLA (9th ed.)Hafez, E. S. E. Reproduction in Farm Animals. 4th ed. Lea & Febiger, 1962.
Atenció: Aquestes cites poden no estar 100% correctes.