Riso, D. R., & Foster, J. A. (2017). Personality types: Using the enneagram for self-discovery (Unabridged.). Tantor Media.
Cita Chicago Style (17a ed.)Riso, Don Richard, y James Anderson Foster. Personality Types: Using the Enneagram for Self-discovery. Unabridged. Old Saybrook: Tantor Media, 2017.
Cita MLA (8a ed.)Riso, Don Richard, y James Anderson Foster. Personality Types: Using the Enneagram for Self-discovery. Unabridged. Tantor Media, 2017.
Precaución: Estas citas no son 100% exactas.