APA (7th ed.) Citation

Rand, A., & Branden, N. (1964). The virtue of selfishness: A new concept of egoism. New American Library.

Chicago Style (17th ed.) Citation

Rand, Ayn, and Nathaniel Branden. The Virtue of Selfishness: A New Concept of Egoism. [New York]: New American Library, 1964.

MLA (9th ed.) Citation

Rand, Ayn, and Nathaniel Branden. The Virtue of Selfishness: A New Concept of Egoism. New American Library, 1964.