Olsen, W. C. (1991). Agricultural economics and rural sociology: The contemporary core literature. Cornell Univ..
芝加哥风格引文Olsen, Wallace C. Agricultural Economics and Rural Sociology: The Contemporary Core Literature. London: Cornell Univ., 1991.
MLA引文Olsen, Wallace C. Agricultural Economics and Rural Sociology: The Contemporary Core Literature. Cornell Univ., 1991.
警告：这些引文格式不一定是100％准确.