Papalia, Diane E.
Boston, 2007
Buku Teks
Hinzen, Heribert
Adult Education, 1982
Buku Teks
Cavanaugh, John C.
Wadsworth , 2011
Buku Teks
Santrock, John W.
Wm. C. Brown Publishers, 1985
Buku Teks SO
by Diane E. Papalia ... [et al]
McGraw-Hill, 2007
Buku Teks SO