Artikel Jurnal
Hutagalung, Mura P., author
Ind-Hill, 1985
Buku Teks
Abdul Mun`im, author
1999
UI - Tesis (Membership)
Universitas Indonesia, 2000
UI - Skripsi (Membership)
Jazuni, author
Program Pascasarjana Universitas Indonesia, 1998
UI - Tesis (Membership)