Colley, John L.
Corporate strategy : the McGraw-Hill executive MBA series
McGraw-Hill, 2001
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Abu Hilwa Aijawa
Strategi penjualan: kunci sukses menjadi sales
Restu Agung, 2005
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Still, Richard R.
Sales management
Prentice Hall International, 1988
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Jones, John G.
Sales management
Alexander Hamilton Institute, 1961
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Ohai, Tim
Sales coaching
American Society for Training & Development, 2008
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