Seager, Spencer L., author
West Publishing Company, 1994
Buku Teks
Seager, Spencer L., author
Thomson Brooks/Cole, 2008
Buku Teks
Morris Hein ...[et.al.]
Brooks/Cole, 1993
Buku Teks
Chang, Raymond, author
Macmillan, 1981
Buku Teks
Armstrong, James W., author
Brooks/Cole Cengage Learning, 2012
Buku Teks