Michael Haines. (1985). Introduction to farming systems. New York: Longman.
Trích dẫn kiểu ChicagoMichael Haines. Introduction to Farming Systems. New York: Longman, 1985.
MLA引文Michael Haines. Introduction to Farming Systems. New York: Longman, 1985.
警告：這些引文格式不一定是100％准確.