Ruttan, V. W. (1969). Agricultural policy in an affluent society. New York: Norton.
Trích dẫn kiểu ChicagoRuttan, Vernon W. Agricultural Policy in an Affluent Society. New York: Norton, 1969.
MLA引文Ruttan, Vernon W. Agricultural Policy in an Affluent Society. New York: Norton, 1969.
警告：这些引文格式不一定是100％准确.