Quadagno, Jill S.
McGraw-Hill, 2002
Buku Teks
Hillier, Susan
Wadsworth and Cengage Learning, 2011
Buku Teks
K. Warner Schaie, Sherry L. Willis, editor ; Bob G. Knight, Becca Levy, Denise C. Park, associate editors
Elsevier, 2011
Buku Teks
edited by Chris Phillipson and Dale Dannefer
SAGE Publications, 2010
Buku Teks
Leonardi Armando Goenawan
Universitas Indonesia, 2005
UI - Tesis (Membership)