​“[Martin was] amazing as usual. … With fast-approaching editorial deadlines, Martin’s flexibility and friendly nature makes the process that bit less stressful. A real team player!”

Farhana Begum, Senior Analyst, Syndicated Analytics, IMS Health, London

“I continue to appreciate Martin’s excellent comments! … . He has found some gems (if errors can be described that way).“
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George Bergeman, Northern Virginia Community College, USA, Co-Author, Contemporary Mathematics for Business and Consumers, 7th Edition