Hart, Thomas L., author
Libraries Unlimited, 1990
Buku Teks
A Ward Lock Book, 1997
Buku Referensi
Erikson, Rolf, author
[American Library association;, ], 2007
eBooks
Poplar, Vitta, author
Andrews McMeel Publishing, 2001
Buku Teks
Stein, Barbara L., author
Neal-Schuman, 1992
Buku Referensi