Halliday, M.A.K., author
Edward Arnold , 1976
Buku Teks
John E. Joseph, author
Edinburgh University Press, 2009
eBooks
Levinson, Stephen C., author
Cambridge University Press, 2004
Buku Teks
edited by Harriet Luria, Deborah M. Seymour, Trudy Smoke
LEA, 2006
Buku Teks
Fabb, Nigel, author
Cambridge University Press, 2009
eBooks