Woolfolk, Anita E.
Allyn and Bacon , 1995
Buku Teks
by Arthur I. Gates [and others]
Macmillan, 1962
Buku Teks
Hoy, Anita Woolfolk, 1947-
Allyn and Bacon, 2004
Buku Teks
Santrock, John W.
McGraw-Hill, 2012
Buku Teks
Santrock, John W.
McGraw-Hill , 2018
Buku Teks