Butler, C. (1986). Who are you?: Discovering your real identity. The Science of Identity Institute.
Cita Chicago (17th ed.)Butler, Chris. Who Are You?: Discovering Your Real Identity. Makati: The Science of Identity Institute, 1986.
Cita MLA (9th ed.)Butler, Chris. Who Are You?: Discovering Your Real Identity. The Science of Identity Institute, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.