APA (7th ed.) Citation

Gelb, A., & Gelb, B. (1965). O'Neill. Dell Publishing.

Chicago Style (17th ed.) Citation

Gelb, Arthur, and Barbara Gelb. O'Neill. Nueva York: Dell Publishing, 1965.

MLA (9th ed.) Citation

Gelb, Arthur, and Barbara Gelb. O'Neill. Dell Publishing, 1965.