Santrock, John W.
McGraw-Hill, 2012
Buku Teks SO
Santrock, John W.
McGraw-Hill, 2006
Buku Teks SO
Woolfolk, Anita E.
Allyn and Bacon , 1995
Buku Teks
Hoy, Anita Woolfolk, 1947-
Allyn and Bacon, 2004
Buku Teks
Gage, N.L.
Houghton Miffiln, 1988
Buku Teks SO