Universitas Indonesia, 2003
UI - Skripsi (Membership)
Kloan Klede Jaya, [date of publication not identified]
Buku Teks
Pustaka Tinta Mas, T.t
Buku Teks
Soegiono, author
1989
UI - Skripsi (Membership)
Universitas Indonesia, 1990
UI - Skripsi (Membership)