APA (7th ed.) Citation

National Urban League. (1951). 40th anniversary year book, 1950. [publisher not identified].

Chicago Style (17th ed.) Citation

National Urban League. 40th Anniversary Year Book, 1950. [New York]: [publisher not identified], 1951.

MLA (9th ed.) Citation

National Urban League. 40th Anniversary Year Book, 1950. [publisher not identified], 1951.

Warning: These citations may not always be 100% accurate.