edited by Thomas A. Sebeok
Mouton, 1974
Buku Referensi
Crystal, David, 1941-, author
Nuansa Cendekia, 2015
Buku Referensi
Kluwer Academic Publishers , 1993
Buku Teks
edited by William M. Christie, Jr.
North-Holland Publishing, 1976
Buku Teks
Nurfika Wijayanti, author
Universitas Indonesia, 2010
UI - Tesis (Open)