Παραπομπή APA

J W Copland. (1987). New castle disease in poultry: A new food pllet vaccine. Australian centere for international agricultural research.

Παραπομπή Chicago Style

J W Copland. New Castle Disease in Poultry: A New Food Pllet Vaccine. Australian centere for international agricultural research, 1987.

Παραπομπή MLA

J W Copland. New Castle Disease in Poultry: A New Food Pllet Vaccine. Australian centere for international agricultural research, 1987.