Gaya APA

Ensminger, M. et al (1990). Feeds and Nutrion (Formerly Feeds and Butrion-Complet) (2nd). USA: The Ensminger Publishing Company.

Gaya MLA

Ensminger, M.E. et al. "Feeds and Nutrion (Formerly Feeds and Butrion-Complet)". 2nd USA: The Ensminger Publishing Company, 1990. Text.