Wild, John J., author
Prentice-Hall, 2003
Buku Teks
Kline, John M., author
Quorum Books, 1985
Buku Teks
Ball, Donald A., author
McGraw-Hill , 2002
Multimedia
Steiner, George A. (George Albert), 1912-, author
Macmillan, 1966
Buku Teks
Robinson, Richard D.
Rinehart and Winston, 1964
Buku Teks