John Ullmen
John Ullmen has written at least 2 books. Their most popular book is Real Influence: Persuade Without Pushing and Gain Without Giving In with 1 save with an average rating of -⭐.
John Ullmen has written at least 2 books. Their most popular book is Real Influence: Persuade Without Pushing and Gain Without Giving In with 1 save with an average rating of -⭐.
2012 • 1 Reader
2012 • 1 Reader • 288 pages