Armstrong, James W., author
Brooks/Cole Cengage Learning, 2012
Buku Teks
Denniston, Katherine J., author
McGraw-Hill Higher Education, 2007
Buku Teks
Denniston, Katherine J., author
McGraw-Hill, Higher Education, 2004
Buku Teks
Baum, Stuart J., author
Macmillan, 1993
Buku Teks
Seager, Spencer L., author
Thomson Brooks/Cole, 2008
Buku Teks