Fakultas Psikologi Universitas Indonesia, 1994
UI - Skripsi (Membership)
Diana Damayanti H, author
1984
UI - Skripsi (Membership)
Sumarno, author
BPNB DI Yogyakarta, 2016
Buku Teks
Panjaitan, Gressy S. Cornelia, author
Fakultas Psikologi Universitas Indonesia, 2001
UI - Skripsi (Membership)
Safitri M, author
2007
UI - Tesis (Membership)