Siegel, E. (1965). The aesthetic method in self-conflict (2nd ed.). Definition Press.
Cita Chicago (17th ed.)Siegel, Eli. The Aesthetic Method in Self-conflict. 2nd ed. New York: Definition Press, 1965.
Cita MLA (9th ed.)Siegel, Eli. The Aesthetic Method in Self-conflict. 2nd ed. Definition Press, 1965.
Atenció: Aquestes cites poden no estar 100% correctes.