Chesterman, Andrew, author
Cambridge University Press, 1991
Buku Teks
Batten,T.R., author
Oxford University Press, 1960
Buku Teks
Nowak, Norman D., author
Praeger, 1970
Buku Teks
Liker, Jeffrey K., author
McGraw-Hill, 2011
Buku Teks
Stout, Rick, author
McGraw-Hill, 1996
Buku Referensi