Casteleyn, Mary, author
Aslib, 1996
Buku Teks
Jernigan, Dale Kayser, author
Appleton-Century-Crofts , 1983
Buku Teks
Bennet, C.L.
New York, American Management Ass.,
Buku Teks
Roberts, Sue, author
Facet Publishing, 2008
Buku Teks
edited by Alice Gertzog
McFarland, 1989
Buku Teks