Universitas Indonesia, 1999
UI - Skripsi (Membership)
Universitas Indonesia, 2004
UI - Skripsi (Membership)
Gunadi, author
Salemba Empat, 2002
Buku Teks
Gunadi, author
Salemba Empat Patria, [date of publication not identified]
Buku Teks
Farida Iriani, author
1990
UI - Skripsi (Membership)