Cita APA (7a ed.)

Gelb, A., & Gelb, B. (1965). O'Neill (1st print.). Dell Publishing Co..

Cita Chicago Style (17a ed.)

Gelb, Arthur, y Barbara Gelb. O'Neill. 1st print. New York: Dell Publishing Co., 1965.

Cita MLA (9a ed.)

Gelb, Arthur, y Barbara Gelb. O'Neill. 1st print. Dell Publishing Co., 1965.