Ratih Djamalia
1996
UI - Skripsi Membership
Iman Budi Prasetiawan
Fakultas Ilmu Pengetahuan dan Budaya Universitas Indonesia, 1994
UI - Skripsi Membership
Nagelkerke, Gerard A.
Leiden Library of the Royal Institute of Linguistics and Anthropology 1982
Buku Referensi
Astrid Chrisafi
1996
UI - Skripsi Membership
GHSNP Management Project, 2005
Buku Teks