1. Improving Sales Force Productivity: A Critical Examination of the Personal Selling Process;Ingram;Review of Business,1990
2. Improving Sales Force Productivity: A Critical Examination of the Personal Selling Process;Ingam;Review of Business,1990
3. Hey, Where's My Survey of Selling Costs?;Sales and Marketing Management,1991
4. Salespeople and Sales Managers Disagree on How to Boost Sales;Marketing Times,1990
5. Where the Jobs Are is Where the Skills Aren't;Bernstein;Business Week,1988