Cadwell, Charles M., author
How to be an effective facilitator
[American Management Association;, ], 1997
eBooks
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
How to make legal action effective Roger Mendelson
Artikel Jurnal
Lewis, Herschell Gordon
How to make your advertising twice as effective at half the cost
Prentice-Hall, 1986
Buku Teks
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