The School of Oriental and African Studies : University of London
Majalah, Jurnal, Buletin
Pretoria : Akademie en Kuns
Majalah, Jurnal, Buletin
Institute for the Studies of Language and Cultyres of Asia and Africa, 2002
Majalah, Jurnal, Buletin
Batubara, Cosmas, author
UKI, 1988
Buku Teks
Artikel Jurnal