APA (7th ed.) Zitazioa
Palmer, H., & Brown, B. P. (1997). The enneagram advantage: Putting the 9 personality types to work in the office. Harmony Books.
Chicago Style (17th ed.) Zitazioa
Palmer, Helen, eta B. Paul Brown. The Enneagram Advantage: Putting the 9 Personality Types to Work in the Office. New York: Harmony Books, 1997.
MLA (9th ed.) Zitazioa
Palmer, Helen, eta B. Paul Brown. The Enneagram Advantage: Putting the 9 Personality Types to Work in the Office. Harmony Books, 1997.
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