Bechet, Thomas P., author
[American Management Association;, ], 2008
eBooks
editor, Owen Hargie
New York , 2006
Buku Referensi
Sheperd, James F., author
Houghton Miffiln, 1983
Buku Teks
Kirst-Ashman, Karen Kay, author
Thomson, 2001
Buku Teks
Allan, Barbara, author
Library Association Publishing, 2000
Buku Teks