APA način citiranja (7. izdanje)
Naranjo, C., & Barnes, P. (2004). The enneagram of society: Healing the soul to heal the world. Gateways Books and Tapes.
Čikaški stil citiranja (17. izdanje)
Naranjo, Claudio, i Paul Barnes. The Enneagram of Society: Healing the Soul to Heal the World. Nevada City, Calif.: Gateways Books and Tapes, 2004.
MLA način citiranja (9. izdanje)
Naranjo, Claudio, i Paul Barnes. The Enneagram of Society: Healing the Soul to Heal the World. Gateways Books and Tapes, 2004.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.