1. Ethics Policies and Gratuity Acceptance by Purchasers;Turner;International Journal of Purchasing and Materials Management,1994
2. Is There Such a Thing as a Free Lunch?;McCracken;International Journal of Purchasing and Materials Management,1996
3. New GM Rules Curb Wining and Dining;Stern;The Wall Street Journal,1996
4. Culture’s Consequences;Hofstede,1980
5. Business Ethics;Dubinsky;Journal of Purchasing and Materials Management,1981