APA引文

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

Chicago Edition Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.