APA (7th ed.) Citation

Gelb, A., & Gelb, B. (1962). O'Neill. Harper.

Chicago Style (17th ed.) Citation

Gelb, Arthur, and Barbara Gelb. O'Neill. New York: Harper, 1962.

MLA (9th ed.) Citation

Gelb, Arthur, and Barbara Gelb. O'Neill. Harper, 1962.

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