DeCenzo, David A. 
Human relations :  personal and professional development.    - 2nd ed.  /  David A. De Cenzo, Beth Silhanek.   - Upper Saddle River, NJ :  Prentice Hall,  c2002.   - xxviii, 385 p. :  ill. (some col.) ;  27 cm. +  computer optical disc (4 3/4 in.)