Chang, Raymond, author
McGraw-Hill, 1996
Buku Teks
Schubert, Leo, author
Allyn and Bacob, 1972
Buku Teks
Umland, Jean B., author
St. Paul West, 1993
Buku Teks
Umland, Jean B., author
Brooks/Cole, 1999
Buku Teks
Dickson, T.R., author
John Wiley & Sons, 1983
Buku Teks