APA (7th ed.) Citation

Rand, A., & Peikoff, L. (1993). The fountainhead (50th anniversary ed.). Penguin Books.

Chicago Style (17th ed.) Citation

Rand, Ayn, and Leonard Peikoff. The Fountainhead. 50th anniversary ed. New York: Penguin Books, 1993.

MLA (8th ed.) Citation

Rand, Ayn, and Leonard Peikoff. The Fountainhead. 50th anniversary ed. Penguin Books, 1993.

Warning: These citations may not always be 100% accurate.