Swanson, Stephen R.
Prentice-Hall, 1997
Buku Teks
Swanson, Stephen R.
Prentice-Hall, 1997
Buku Teks
Linz, Peter
John Wiley & Sons, 1979
Buku Teks
Goodman, Seymour E.
McGraw-Hill Kogakusha, 1977
Buku Teks
Hawryszkiewycz, Igor Titus
Sydney: Prentice Hall, 1994,
Buku Teks