Vernandha Vannya Hidayat Putri, author
Fakultas Ilmu Sosial dan Ilmu Politik Universitas Indonesia, 2016
UI - Skripsi (Membership)
Baveystock, Sacha, author
Prentice Hall Life, 2007
Buku Teks
Allender, Judith Ann, author
J.B. Lippincott , 1998
Buku Teks
Gestwicki, Carol, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Pasaribu, Dexon, author
Fakultas Psikologi Universitas Indonesia, 2010
UI - Tesis (Open)