George Joy. (1995). Phosphorus and trace element status of anoestrus and repeat breader crossbred cows. College of veterinary and animal sciences.
استشهاد بنمط شيكاغوGeorge Joy. Phosphorus and Trace Element Status of Anoestrus and Repeat Breader Crossbred Cows. College of veterinary and animal sciences, 1995.
MLA استشهادGeorge Joy. Phosphorus and Trace Element Status of Anoestrus and Repeat Breader Crossbred Cows. College of veterinary and animal sciences, 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.