Clements, Alan, author
McGraw-Hill, 1991
Buku Referensi
Carr, Joseph J., author
Tab Books, 1982
Buku Referensi
Dollhoff, Terry, author
Reston Pub., 1979
Buku Teks
Ghani, Noordin, author
Research Study Press, 1980
Buku Teks
Byers, T.J., author
Micro Text/McGraw-Hill Copublication, 1983
Buku Teks