edited by Michael Rines
Gower in Association with Marketing Magazine, 1981
Buku Teks
Coulmas, Florian
Blackwell Publishers, 1998
Buku Teks
Skousen, Philip L.
McGraw-Hill, 2011
Buku Teks
Edson, Gary
Routledge, 1996
Buku Referensi
editor-in-chief, Robert H. Bishop
CRC Press, 2002
Buku Referensi