APA (7th ed.) Citation

(1921). Editor and publisher international year book, 1920/21-. s.n.

Chicago Style (17th ed.) Citation

Editor and Publisher International Year Book, 1920/21-. [New York: s.n, 1921.

MLA (9th ed.) Citation

Editor and Publisher International Year Book, 1920/21-. s.n, 1921.