APA引文

Christy, L. C. (1971). Legislative principles of soil conservation. Rome: FAO.

Chicago Style Citation

Christy, Lawrence C. Legislative Principles of Soil Conservation. Rome: FAO, 1971.

MLA引文

Christy, Lawrence C. Legislative Principles of Soil Conservation. Rome: FAO, 1971.

警告：這些引文格式不一定是100％准確.