How to make legal action effective Roger Mendelson
 Artikel Jurnal
How to develop an effective financial reporting system.
Modern Business Report , 1985
 Buku Teks
Dean, John J.
Effective speaking here's how / John J. Dean
Boolarong Publications, 1987
 Buku Teks SO
Ridge, Warren J.
How to control cost and improve profits through the effective management of computer software
Illinois Dow Jones-Irwin , 1973
 Buku Teks
Chan, Janis Fisher
Presentation success: how to plan, prepare, anddeliver effective presentations
[American Management Association;, ], 1999
 eBooks