Kuki, Hiroshi, author
Linguistic Circle of Canberra, 1970
Buku Teks
Clark, John, author
Blackwell, 1995
Buku Teks
Bridgeman, Loraine I
New York International Journal of American Linguistics 1961
Buku Teks
Trask, R.L., author
Routledge, 1996
Buku Referensi
Lacy, Paul V de, author
Cambridge University Press,, 2006
Buku Teks