Citazione APA

B W Calnak, B W CALNEK, & H John Marnes. (1994). Diseases of poultry (9.). AMES.

Stile di citazione Chicago

B W Calnak, B W CALNEK, e H John Marnes. Diseases of Poultry. 9. AMES, 1994.

Citazione MLA

B W Calnak, et al. Diseases of Poultry. 9. AMES, 1994.