Editors Graham Mackenzie; Ray Prytherch
Bowker Saur , 1991
Buku Teks SO
editors by Maurice Line; Graham Mackenzie; John Feather
Bowker Saur, 1996
Buku Teks SO
Boss, Richard W.
G.K. Hall Publishers, 1987
Buku Teks SO
Rowley, Jennifer
Clive Bingley , 1980
Buku Teks SO
American Library Association,
Majalah, Jurnal, Buletin