Analysis of information sources in references of the Wikipedia article "Objectivism" in English language version.
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: ISBN / Date incompatibility (help) Binswanger, Harry (December 1991). "Volition as Cognitive Self-Regulation". Organizational Behavior and Human Decision Processes. 50 (2): 154–178. doi:10.1016/0749-5978(91)90019-P. Branden, Nathaniel (1969). "Man: A Being of Volitional Consciousness". The Psychology of Self-Esteem. Los Angeles: Nash Publishing. ISBN 978-0-8402-1109-5. Peikoff, Leonard (1991). Objectivism: The Philosophy of Ayn Rand. New York: Dutton. ISBN 978-0-452-01101-4.{{cite book}}
: ISBN / Date incompatibility (help) Binswanger, Harry (1990). The Biological Basis of Teleological Concepts. Los Angeles: Ayn Rand Institute Press. ISBN 978-0-9625336-0-0. Smith, Tara (2000). Viable Values: A Study of Life as the Root and Reward of Morality. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8476-9760-1. OCLC 42397381. Gotthelf, Allan & Lennox, James G., eds. (2010). Metaethics, Egoism, and Virtue: Studies in Ayn Rand's Normative Theory. Ayn Rand Society Philosophical Studies. Pittsburgh: University of Pittsburgh Press. ISBN 978-0-8229-4400-3. OCLC 617508678.{{cite book}}
: ISBN / Date incompatibility (help) Smith, Tara (2006). Ayn Rand's Normative Ethics: The Virtuous Egoist. New York: Cambridge University Press. ISBN 978-0-521-86050-5. OCLC 60971741.{{cite book}}
: ISBN / Date incompatibility (help) Peikoff, Leonard (1991). Objectivism: The Philosophy of Ayn Rand. New York: Dutton. ISBN 978-0-452-01101-4. Smith, Tara (1997). Moral Rights and Political Freedom. Lanham, MD: Rowman & Littlefield. ISBN 978-0-8476-8026-9. OCLC 31710378.