Santrock, John W., author
McGraw-Hill, 2006
Buku Teks
Illingworth, Ronald S.
Churchill Livingstone, 1987
Buku Teks
Breckenridge, Marian E.
W.B. Saunders, 1949
Buku Teks
Berk, Laura E., author
Allyn and Bacon, 1997
Buku Teks
I Gusti Agung Ngurah Sugitha Adnyana, author
2016
UI - Tugas Akhir