Library Association, 1989
Buku Referensi
Danbury : Lexicon Publications, Inc., 2004,
Buku Referensi
Chaisson, Eric, author
Prentice-Hall, 1999
Buku Referensi
Vaughan, Terry A.
Saunders College Publishing, 1986
Buku Referensi
Matlin, Margareth W., author
Harcourt Brace College Publisher, 1999
Buku Teks