Lazar, Irwin, author
McGraw-Hill, 1980
Buku Teks
Voisinet, Donald D., author
Prentice-Hall, 1983
Buku Teks
Traister, John E., author
Reston Publishing Company, 1978
Buku Referensi
Roe, L.B.
McGraw-Hill, 1972
Buku Teks
Lubkin, Yale Jay, author
Addison-Wesley, 1970
Buku Teks