Lee, Jin Ho, author
Bagijeong, 2009
Buku Teks
Tjia, Johnny
University Centre for Linguistics, 2007
Buku Teks
Ladefoged, Peter, author
Blackwall, 2001
Buku Teks
Editor Ruslan Mitkov
Oxford University Press, 2004
Buku Teks
Letmiros, author
Fakultas Ilmu Pengatahuan Budaya Universitas Indonesia, 1996
UI - Laporan Penelitian