APA (7e ed.) Bronvermelding
Naranjo, C., & Barnes, P. (2004). The enneagram of society: Healing the soul to heal the world. Gateways Books and Tapes.
Chicago (17e ed.) Bronvermelding
Naranjo, Claudio, en Paul Barnes. The Enneagram of Society: Healing the Soul to Heal the World. Nevada City, Calif.: Gateways Books and Tapes, 2004.
MLA (9e ed.) Bronvermelding
Naranjo, Claudio, en Paul Barnes. The Enneagram of Society: Healing the Soul to Heal the World. Gateways Books and Tapes, 2004.
Let op: Deze citaties zijn niet altijd 100% accuraat.