Guy R. Powell
Guy's Marketing Books
Guy R. Powell is a marketing strategist and author helping marketers drive revenue through smarter decisions and analytics.
His newest book, AI Marketing Machine (June 16, 2026), is a practical guide to harnessing AI for marketing strategy and results. He has also authored Marketing Machine, Marketing Calculator, and ROI of Social Media — the latter two with John Wiley & Sons.
Guy is President and Founder of ProRelevant, a global analytics and consulting firm with offices in Atlanta, Charlotte, Singapore, and Bangalore.
Guy's Historical Fiction Books
Guy is also a part-time historian, Christian, and author of The Only Witness: A History of the Shroud of Turin — a fast-paced Christian fiction tracing the remarkable journey of the Shroud from Jerusalem to Turin, weaving history, science, and faith into a compelling story.
Popular items by Guy R. Powell
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The Only Witness: A History of the Shroud Of Turin
Powell, Guy R
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Marketing Calculator: Measuring and Managing Return on Marketing Investment
Powell, Guy R.
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The Post-Covid Marketing Machine: Prepare Your Team To Win (Building Marketing Machines)
Powell, Guy R
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Marketing Machine: The Secret History of the Future of Marketing (ROI)
Powell, Guy R.
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Roi of Social Media: How to Improve the Return on Your Social Marketing Investment
Guy Powell; Steven Groves; Jerry Dimos
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View 23 offersUS$ 10.82
