Humi, Mayer
Pros-Kent, 1992
Buku Teks
Haberman, Richard
Pearson Prentice Hall, 2004
Buku Teks
Zill, Dennis G.
Brooks/Cole & Cengage Learning, 2013
Buku Teks
Boyce, William E.
John Wiley & Sons, 1977
Buku Teks
Martin, Robert H.
McGraw-Hill, 1984
Buku Teks