Baltimore : The Linguistic Society of America
Majalah, Jurnal, Buletin
Lancaster, Lane W.
Van Nostrand , 1952
Buku Teks
John Wiley & Sons, 1997
Buku Teks
Winter, Michael, author
Routledge, 1996
Buku Teks
Fukutake, Tadashi, author
University of Tokyo Press, 1967
Buku Teks