Lewis, Herschell Gordon
Prentice-Hall, 1986
Buku Teks
Lewis, Herschell Gordon, author
Prentice-Hall, 1986
Buku Teks
Bennie, Michael, author
Elex Media Komputindo, 1996
Buku Teks
Artikel Jurnal
Elliot, Rose, author
Chapmans Publisher Ltd., 1994
Buku Referensi