APA引文

Richard L Kohls & Richard L Kohls. (1961). Marketing of agricultureal products (2nd.). New York.

Chicago Edition Citation

Richard L Kohls and Richard L Kohls. Marketing of Agricultureal Products. 2nd. New York, 1961.

MLA引文

Richard L Kohls and Richard L Kohls. Marketing of Agricultureal Products. 2nd. New York, 1961.

警告：這些引文格式不一定是100％准確.