APA (7th ed.) Citation

Rand, A., Peikoff, L., & Binswanger, H. (1990). Introduction to objectivist epistemology (Expanded 2nd ed.). New American Library.

Chicago Style (17th ed.) Citation

Rand, Ayn, Leonard Peikoff, and Harry Binswanger. Introduction to Objectivist Epistemology. Expanded 2nd ed. New York, N.Y: New American Library, 1990.

MLA (9th ed.) Citation

Rand, Ayn, et al. Introduction to Objectivist Epistemology. Expanded 2nd ed. New American Library, 1990.