Daniel D. Karp, editor
Wolters Kluwer, 2015
Buku Teks
Klijn, Jan G.M.
Raven press , 1987
Buku Teks
Priestman, Terry
Springer, 2012
eBooks
edited by Michael Rines
Gower in Association with Marketing Magazine, 1981
Buku Teks
Coulmas, Florian
Blackwell Publishers, 1998
Buku Teks