American Library Association, 1984
Buku Referensi
Lazarinis, Fotis, author
Chandos, 2015
eBooks
Raju, Jaya, author
Chandos, 2006
Buku Teks
American Library Association, 1988
Buku Referensi
edited by Michael Gorman, Paul W. Winkler
American Library Association, 1978
Buku Referensi