APA

International Union of Social Studies, . (1953). Code of international ethics. Westminster, Md: Newman Press.

Chicago

International Union of Social Studies, . 1953. Code of international ethics. Westminster, Md: Newman Press.

Harvard

International Union of Social Studies, . (1953). Code of international ethics. Westminster, Md: Newman Press.

MLA

International Union of Social Studies, . Code of international ethics. Westminster, Md: Newman Press. 1953.