(1989). Proceedings of the 40th North Central Avian Disease Conference and Poultry Respiratory Disease Symposium, 1989. [Minneapolis, MN?]: College of Veterinary Medicine, Minnesota Extension Service, University of Minnesota.
Trích dẫn kiểu ChicagoProceedings of the 40th North Central Avian Disease Conference and Poultry Respiratory Disease Symposium, 1989. [Minneapolis, MN?]: College of Veterinary Medicine, Minnesota Extension Service, University of Minnesota, 1989.
Trích dẫn MLAProceedings of the 40th North Central Avian Disease Conference and Poultry Respiratory Disease Symposium, 1989. [Minneapolis, MN?]: College of Veterinary Medicine, Minnesota Extension Service, University of Minnesota, 1989.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.