Knutson, R. D. (1998). Agricultural and food policy. New Jersey: Prentice Hall.
Trích dẫn kiểu ChicagoKnutson, Ronald D. Agricultural and Food Policy. New Jersey: Prentice Hall, 1998.
MLA引文Knutson, Ronald D. Agricultural and Food Policy. New Jersey: Prentice Hall, 1998.
警告：這些引文格式不一定是100％准確.