Rashelle S. Karp, editor
[American Library association, American Library association], 2002
eBooks
Durrance, Joan C., author
[American Library association, ], 2005
eBooks
Morley, Michael, author
Palgrave, 2002
Buku Teks
Gates, Jean Key, author
McGraw-Hill, 1974
Buku Referensi
revised and update by Sandy Norman
Library Association Publishing, 1999
Buku Teks