Books by Guy R. Powell

Cover of Marketing calculator

Marketing calculator

by Guy R. Powell

2008
Cover of ROI of $ocial media

ROI of $ocial media

by Guy R. Powell

2011
Cover of Return on Marketing Investment

Return on Marketing Investment

by Guy R. Powell

2003
Cover of Marketing Machine

Marketing Machine

by Guy R. Powell

2018
Cover of Only Witness

Only Witness

by Guy R. Powell

2023

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