APA
United Nations, . (1947). Guide for lecturers and teachers. United Nations: Department of Public Information United Nation.
Chicago
United Nations, . 1947. Guide for lecturers and teachers. United Nations: Department of Public Information United Nation.
Harvard
United Nations, . (1947). Guide for lecturers and teachers. United Nations: Department of Public Information United Nation.
MLA
United Nations, . Guide for lecturers and teachers. United Nations: Department of Public Information United Nation. 1947.