APA
(1957). Report on the world social situation including studies of urbanization in under developed areas. New York: United Nations.
Chicago
1957. Report on the world social situation including studies of urbanization in under developed areas. New York: United Nations.
Harvard
(1957). Report on the world social situation including studies of urbanization in under developed areas. New York: United Nations.
MLA
Report on the world social situation including studies of urbanization in under developed areas. New York: United Nations. 1957.