R. A. Widyarini Utami, author
1996
UI - Skripsi (Membership)
Artikel Jurnal
Buckingham, David, 1954-, author
Taylor and Francis, 1994
Buku Teks
Kean, John M.
St. Martin's Press , 1976
Buku Teks
Fina Febriani, author
Fakultas Psikologi Universitas Indonesia, 2016
UI - Tesis (Membership)