APA način citiranja (7. izdanje)
Houghton, P. (2002). Nine descents of the spirit: Towards inner harmony. Jessica Kingsley.
Čikaški stil citiranja (17. izdanje)
Houghton, Peter. Nine Descents of the Spirit: Towards Inner Harmony. London ; Philadelphia: Jessica Kingsley, 2002.
MLA način citiranja (9. izdanje)
Houghton, Peter. Nine Descents of the Spirit: Towards Inner Harmony. Jessica Kingsley, 2002.
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