Huddleston, Rodney, author
Cambridge University Press, 2006
Buku Teks
Huddleston, Rodney, author
Melbourne University Press, 1984
Buku Teks
Collins, Peter, author
Palgrave Macmillan, 2020
Buku Teks
Jasckson, Howard, author
Longman, 1990
Buku Teks
Dunn, John, 1940-, author
Routledge, 2009
Buku Referensi