APA引文

(1970). Contours of change. Washington, D.C: Argriculture.

Trích dẫn kiểu Chicago

Contours of Change. Washington, D.C: Argriculture, 1970.

MLA引文

Contours of Change. Washington, D.C: Argriculture, 1970.

警告：这些引文格式不一定是100％准确.