Sali A. Tagliamonte
Cambridge University Press, 2016
Buku Teks
Carter, Ronald
Routledge, 2004
Buku Teks
Kaplan, Abby
Cambridge University Press, 2016
Buku Teks
Donnellon, Anne
Harvard Business School Press , 1996
Buku Teks
Gunn, Jeannie
Vict.Hutchinson of Australia, 1982
Buku Teks