Hopster, H. (1998). Coping strategies in dairy cows. Lelystad.
Trích dẫn kiểu ChicagoHopster, Hans. Coping Strategies in Dairy Cows. Lelystad, 1998.
MLA引文Hopster, Hans. Coping Strategies in Dairy Cows. Lelystad, 1998.
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APA引文