Chutiyanweerakun และ Chawal. (1994) Economic Analysis of Young Corn Production in Amphoe Tarmaka, Karnchanaburi Province, 1993/94 Crop Year. University of the Thai Chamber of Commerce:ม.ป.ท.Chutiyanweerakun และ Chawal. 1994. Economic Analysis of Young Corn Production in Amphoe Tarmaka, Karnchanaburi Province, 1993/94 Crop Year. ม.ป.ท.:University of the Thai Chamber of Commerce;Chutiyanweerakun และ Chawal. Economic Analysis of Young Corn Production in Amphoe Tarmaka, Karnchanaburi Province, 1993/94 Crop Year. ม.ป.ท.:University of the Thai Chamber of Commerce, 1994. Print.