PALMER HELEN. (1998). ENNEAGRAM ADVANTAGE: PUTTING THE 9 PERSONALITY TYPES--------------IN THE OFFICE. HARMONY BOOKS.
Chicago Style (17. basım) AtıfPALMER HELEN. ENNEAGRAM ADVANTAGE: PUTTING THE 9 PERSONALITY TYPES--------------IN THE OFFICE. NEW YORK: HARMONY BOOKS, 1998.
MLA (9th ed.) AtıfPALMER HELEN. ENNEAGRAM ADVANTAGE: PUTTING THE 9 PERSONALITY TYPES--------------IN THE OFFICE. HARMONY BOOKS, 1998.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..