Gaya APA

L., C, C., W, J, C. (1991). Acricultural Economics and Agribusiness (5th.Ed). New York: John Wiloey dan Sons Inc.

Gaya MLA

L., Cramer, Cail., W, Jensen, Clarence. "Acricultural Economics and Agribusiness". 5th.Ed New York: John Wiloey dan Sons Inc, 1991. Text.