APA Edition Citation

B W Calnek, M S Hotstad, & M.S Hofstad. (1972). Disease of poultry (6.). Ames.

Chicago Edition Citation

B W Calnek, M S Hotstad, and M.S Hofstad. Disease of Poultry. 6. Ames, 1972.

MLA Edition Citation

B W Calnek, et al. Disease of Poultry. 6. Ames, 1972.