Giegerich, Heinz J.
Cambridge University Press, 1995
Buku Teks
Cameron, Susan, 1958-
McGraw-Hill, 2012
Buku Teks
Yarber, Robert
Harper & Collins, 1993
Buku Teks
Murphy, Raymond
Cambridge University Press, 1998
Buku Teks
Graver, B.D.
Walton Street , 1987
Buku Teks