Line, Maurice B., editor
Clive Bingley , 1967
Buku Teks
Dale, Margaret, author
Kogan Page Limited, 2003
Buku Teks
edited by Christopher Khoo, Diljit Singh and Abdus Sattar Chaudhry
Nanyang Tecnological University, 2006
Buku Referensi
edited by Loriene Roy, Kelly Jensen, Alex Hershey Meyers
[American Management Association, ], 2009
eBooks
Albritton, Rosie L., author
Cool Libraries, 1990
Buku Teks