Marc Effron has written at least 4 books. Their most popular book is 8 Steps to High Performance: Focus On What You Can Change with 2 saves with an average rating of -⭐.
2018 • 2 Readers • 256 pages
2003 • 1 Reader
2010 • 1 Reader • 246 pages
2010 • 1 Reader • 202 pages