Rand, A. (1964). Virtue of selfishness. Centennial Edition.
Lua i Stíl Chicago (17ú heag.)Rand, A. Virtue of Selfishness. USA: Centennial Edition, 1964.
Lua MLA (9ú heag.)Rand, A. Virtue of Selfishness. Centennial Edition, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.