Schapper, Antoinette
Neuter gender in the languages of aru
Faculty of Humanities University of Indonesia, 2015
 Artikel Jurnal
Anthology of Asean literatures : pre-Islamic literature of Indonesia
Subagio Sastrowardoyo, Sapardi Djoko Damono, A. Kasim Achmad, penyunting
The Asean Committee on Culture and Information , 1987
 Buku Referensi
Sellato, Bernard
The languages and peoples of the müller mountains a contribution to the study of the origins of borneo's nomads and their languages
Faculty of Humanities University of Indonesia, 2015
 Artikel Jurnal
Katzner, Kenneth
The languages of the world
Routledge, 1995
 Buku Referensi
The Slavonic languages
edited by Bernard Comrie and Greville G. Corbett
Routledge, 1993
 Buku Teks SO