PALMER HELEN. (1998). ENNEAGRAM ADVANTAGE: PUTTING THE 9 PERSONALITY TYPES--------------IN THE OFFICE. HARMONY BOOKS.
Chicago Style (17th ed.) CitationPALMER HELEN. ENNEAGRAM ADVANTAGE: PUTTING THE 9 PERSONALITY TYPES--------------IN THE OFFICE. NEW YORK: HARMONY BOOKS, 1998.
MLA引文PALMER HELEN. ENNEAGRAM ADVANTAGE: PUTTING THE 9 PERSONALITY TYPES--------------IN THE OFFICE. HARMONY BOOKS, 1998.
警告:這些引文格式不一定是100%准確.