Harries, Steve
Library Assocantion Publishing, 1993
Buku Teks
O`Brien, James A., 1936-
McGraw-Hill , 1999
Buku Teks
Cooke, Alison
Facet Publishing, 2006
Buku Teks
Cooke, Alison
Library Association Publishing, 1999
Buku Teks
edited by Harry R. Karp
McGraw-Hill, 1980
Buku Referensi