Georgetown University Press, 1972
Buku Teks
edited by Eric P. Hamp, Fred W. Householder, Robert Austerlitz
University of Chicago Press, 1966
Buku Referensi
Corder, Stephen Pit, editor
Penguin Books , 1973
Buku Teks
edited by Martin Joos
University of Chicago Press, 1966
Buku Referensi
edited by Thomas A. Sebeok
Mouton, 1970
Buku Referensi