APA (7th ed.) Citation

Gelb, A., & Gelb, B. (1973). O'Neill: [by] Arthur & Barbara Gelb ([Enl. ed.].). Harper & Row.

Chicago Style (17th ed.) Citation

Gelb, Arthur, and Barbara Gelb. O'Neill: [by] Arthur & Barbara Gelb. [Enl. ed.]. New York: Harper & Row, 1973.

MLA (9th ed.) Citation

Gelb, Arthur, and Barbara Gelb. O'Neill: [by] Arthur & Barbara Gelb. [Enl. ed.]. Harper & Row, 1973.