Heady, E. O. (1954). Farm management economics. New Jersey: Prentice-Hall.
Trích dẫn kiểu ChicagoHeady, Earl O. Farm Management Economics. New Jersey: Prentice-Hall, 1954.
MLA引文Heady, Earl O. Farm Management Economics. New Jersey: Prentice-Hall, 1954.
警告：這些引文格式不一定是100％准確.