She further elaborated on them in her periodicals The Objectivist Newsletter, The Objectivist, and The Ayn Rand Letter, and in non-fiction books such as Introduction to Objectivist Epistemology and The Virtue of Selfishness.
Пізніше вона працювала над ними в періодичних виданнях The Objectivist Newsletter, The Objectivist, та The Ayn Rand Letter, і в нехудожніх творах таких як Introduction to Objectivist Epistemology та The Virtue of Selfishness.