Stueart, Robert D., author
Libraries Unlimited, 2002
Buku Teks
Stueart, Robert D., author
Libraries Unlimited, 2013
Buku Teks
Edited by Ray Prytherch
Gower, 1998
Buku Teks
Bryson, Jo, author
Gower , 1990
Buku Teks
Bryson, Jo, author
Ashgate, 1999
Buku Teks