Palmer, Helen. The Enneagram Advantage : Putting the 9 Personality Types to Work in the Ooffice / Helen Palmer and Paul B. Brown. - 1st ed. - New York : Harmony Books, c1998. - 282 p. : ill. ; 22 cm. ISBN: 0517704323 (hardcover : alk. paper) LCCN: 97025038 Subjects--Topical Terms: Enneagram.Typology (Psychology) LC Class. No.: BF698.35.E54 / P34 1998 Dewey Class. No.: 155.2/64 / PAL