Cita APA

Rand,Ayn. (1961). Virtue of selfishness. Signet Book.

Chicago Edition Citation

Rand,Ayn. Virtue of Selfishness. New Jersey: Signet Book, 1961.

Cita MLA

Rand,Ayn. Virtue of Selfishness. Signet Book, 1961.

Atenció: Aquestes cites poden no estar 100% correctes.