revised and update by Sandy Norman
Library Association Publishing, 1999
Buku Teks
Taylor, Laurence John
Tamarisk Books, 1980
Buku Teks
Bruwelheide, Janis H.
American Library Association, 1995
Buku Teks
Ziarnik, Natalie Reif
American Library Association, 2003
eBooks
Thorn, Eric A.
Jay Books, 1989
Buku Referensi