Greenbaum, Sidney
Longman , 1991
Buku Teks
Quirk, Randolph
English Language Book Society/Longman, 1989
Buku Teks
Gramley, Stephan
Routledge , 1992
Buku Teks
edited by Joy Littell
McDougal Littell, 1985
Buku Teks
Huddleston, Rodney
Cambridge University Press, 1984
Buku Teks