APA (7th ed.) Citation

Tung, W. L. (1969). International organization under the United Nations system. Thomas Y. Crowell.

Chicago Style (17th ed.) Citation

Tung, William L. International Organization Under the United Nations System. Nueva York: Thomas Y. Crowell, 1969.

MLA (9th ed.) Citation

Tung, William L. International Organization Under the United Nations System. Thomas Y. Crowell, 1969.