Fletcher, Ralph, author
Mizan Learning Center, 2006
Buku Teks
Lindsay, David, author
Longman, 1995
Buku Teks
Miles, James
Science Research Associaties, Inc., 1982
Buku Teks
van der Veur, Barbara W.
Antar KArya, 1981
Buku Teks
Alley, Michael
Springer-Verlag, 1996
Buku Teks