APA引文

Duncan, E. R. (1977). Dimensions of world food problems. IOWA State University Press.

Chicago Edition Citation

Duncan, E R. Dimensions of World Food Problems. USA: IOWA State University Press, 1977.

MLA引文

Duncan, E R. Dimensions of World Food Problems. IOWA State University Press, 1977.

警告：這些引文格式不一定是100％准確.