APA引文

Wall, D. (1967). The third world challenge: Preference for development. London: Price Seven Shillings.

Trích dẫn kiểu Chicago

Wall, David. The Third World Challenge: Preference for Development. London: Price Seven Shillings, 1967.

MLA引文

Wall, David. The Third World Challenge: Preference for Development. London: Price Seven Shillings, 1967.

警告：这些引文格式不一定是100％准确.