Locke, John L.
Simon & Schuster, 1998
Buku Teks
Cambridge University Press, 1996
eBooks
Scollon, Ronald, author
Routledge , 2001
Buku Teks
Witoelar, Wimar
Gramedia Pustaka Utama, 1995
Buku Teks
Andika Chaktiaji Zulfiqar, auhtor
2016
UI - Skripsi (Membership)