APA引文

United Nations. (1968). Yearbook of the United Nations 1968. New York: Office of Public Information.

Trích dẫn kiểu Chicago

United Nations. Yearbook of the United Nations 1968. New York: Office of Public Information, 1968.

MLA引文

United Nations. Yearbook of the United Nations 1968. New York: Office of Public Information, 1968.

警告：这些引文格式不一定是100％准确.