edited by Jack C. Richards
Longman, 1993
Buku Teks
Montgomery, Robert L., author
Little, Brown, 1962
Buku Teks
Cameron, Deborah, author
Cambridge University Press, 2004
Buku Teks
Epstein, E.L., author
Methuen, 1978
Buku Teks
Bloomfield, Leonard, author
Dewan Bahasa dan Pustaka, 1992
Buku Teks