Santrock, John W., author
Erlangga, 2007
Buku Teks
Santrock, John W., author
Erlangga, 2007
Buku Teks
Santrock, John W., author
McGraw-Hill, 2007
Buku Teks
Papalia, Diane E., author
McGraw-HIll , 2006
Buku Teks
Bergin, Christi Crosby, author
Wadsworth and Cengage Learning, 2012
Buku Referensi