Crystal, David, 1941-
Cambridge University Press, 1997
Buku Referensi
Crystal, David, 1941-
Cambridge University Press, 1994
Buku Referensi
Labov, William
Blackwell, 2001
Buku Teks
Crystal, David, 1941-
Nuansa Cendekia, 2015
Buku Referensi
edited by Thomas A. Sebeok
Mouton, 1971
Buku Referensi