Piggott, Mary, author
The Library Association, 1990
Buku Teks
Maxwell, Robert L., author
American Library Association, 2004
Buku Referensi
Gorman, Michael, author
American Library Association, 1989
Buku Referensi
American Library Association, 1984
Buku Referensi
Haworth Press, 1983
Buku Referensi