Garbutt, John, author
Waste management law a pratical handbook
John Wiley and Sons, 1995
 Buku Referensi
Topham, Alfred F.
Palmer's company law : a pratical book for lawyers and business men / by Alfred F. Thopam and A.M.R. Topham
Stevens and Sons, Limited, 1933
 Buku Teks
A pratical guide to job analysis
Erich P. Prien, editor
Pfeiffer, 2009
 Buku Teks
Darryl J. Cooke
Due Diligence A Pratical Guide
FT Law & Tax, 1997
 Buku Teks
Crow, Lester D, author
Human relations in pratical nursing
Coller-McMilan, 1964
 Buku Teks