Gaya APA

Norton, G, W., Alwang, J. (1993). Introduction to economics of agricultural development / George W. Norton, Jeffrey Alwang . New York: McGraw-Hill.

Gaya MLA

Norton, George, W.., Alwang, Jeffrey. "Introduction to economics of agricultural development / George W. Norton, Jeffrey Alwang". New York: McGraw-Hill, 1993. Textbook.