thomsen, f. l. (1951). Agricultural marketing. mcgraw hill book company, inc.
Chicago Style (17th ed.) Citationthomsen, frederick lundy. Agricultural Marketing. new york , london: mcgraw hill book company, inc, 1951.
MLA引文thomsen, frederick lundy. Agricultural Marketing. mcgraw hill book company, inc, 1951.
警告：這些引文格式不一定是100％准確.