B Hafez. (2000). Reproduction in farm animals (7th.). Lippincott williams&Wilkins.
Chicago Edition CitationB Hafez. Reproduction in Farm Animals. 7th. Lippincott williams&Wilkins, 2000.
Cita MLAB Hafez. Reproduction in Farm Animals. 7th. Lippincott williams&Wilkins, 2000.
Atenció: Aquestes cites poden no estar 100% correctes.