Creating orthographies for endangered languages
edited by Mari C. Jones, Damien Mooney
Cambridge University Press, 2017
 Buku Teks SO
Schapper, Antoinette
Neuter gender in the languages of aru
Faculty of Humanities University of Indonesia, 2015
 Artikel Jurnal
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
The World's major languages
edited by Bernard Comrie
Oxford University Press, 1987
 Buku Teks SO
The Uralic languages
edited by Daniel Abondolo
Routledge, 1998
 Buku Teks SO