Gaya APA

Buttel, F, H. et al (1990). The Sociology of agriculture / Frederick H. Buttel, Olaf F. Larson, Gilbert W. Gillespie . New York: Greenwood Press.

Gaya MLA

Buttel, Frederick, H.. et al. "The Sociology of agriculture / Frederick H. Buttel, Olaf F. Larson, Gilbert W. Gillespie". New York: Greenwood Press, 1990. Textbook.