Johnson, Spencer. Who moved my cheese? : the secret to enjoying your work and life, now / Spencer Johnson. - New York : Putnam, 2004. - 109 p. : ill. ; 22 cm. ISBN: 9780553817959 LCCN: 98-015502 Subjects--Topical Terms: Change (Psychology) LC Class. No.: BF637.C4 / J64 2004 Dewey Class. No.: 155.2/4