APA引文

Orr, D. A. (1976). Unilever and economic develoment in the third world. London: Unilever Limited.

Trích dẫn kiểu Chicago

Orr, D. A. Unilever and Economic Develoment in the Third World. London: Unilever Limited, 1976.

MLA引文

Orr, D. A. Unilever and Economic Develoment in the Third World. London: Unilever Limited, 1976.

警告：这些引文格式不一定是100％准确.