Shepherd, Valerie
Pinter, 1990
Buku Teks SO
Epstein, E.L.
Methuen, 1978
Buku Teks SO
edited by Jonathan Culpeper, Mick Short, and Peter Verdonk
Routledge, 1998
Buku Teks SO
Nash, Walter
Routledge, 1990
Buku Teks SO
Webber, John
University of Wisconsin Press, 1968
Buku Teks SO