APA (7th ed.) Citation

Rand, A., Peikoff, L., & Schwartz, P. (1988). The voice of reason ; essays in objectivist thought. New American Library ; Penguin.

Chicago Style (17th ed.) Citation

Rand, Ayn, Leonard Peikoff, and Peter Schwartz. The Voice of Reason ; Essays in Objectivist Thought. New York : Markham, Ontario: New American Library ; Penguin, 1988.

MLA (9th ed.) Citation

Rand, Ayn, et al. The Voice of Reason ; Essays in Objectivist Thought. New American Library ; Penguin, 1988.