APA (7th ed.) Citation

Singer, H. W. (1968). Fifty years on: The United Nations and Economic and social development. [s.n].

Chicago Style (17th ed.) Citation

Singer, Hans W. Fifty Years on: The United Nations and Economic and Social Development. IDS: [s.n], 1968.

MLA (9th ed.) Citation

Singer, Hans W. Fifty Years on: The United Nations and Economic and Social Development. [s.n], 1968.