MLA

Bultena, Gordon L, Eric O Hoiberg, and Peter Nowak. Social and Ethical Implications of Animal Growth Promotants. USA, 1989.

APA

Bultena, G. L, Hoiberg, E. O, & Nowak, P. (1989). Social and ethical implications of animal growth promotants. USA.

Chicago

Bultena, Gordon L., Eric O Hoiberg, and Peter Nowak. Social and Ethical Implications of Animal Growth Promotants. USA, 1989.