Sciabarra. Ayn Rand. Penn State University Press.
Cita Chicago (17th ed.)Sciabarra. Ayn Rand. Penn State University Press.
Cita MLA (8th ed.)Sciabarra. Ayn Rand. Penn State University Press.
Atenció: Aquestes cites poden no estar 100% correctes.
Cita APA (7th ed.)