Cron, R. L. (1974). Assuring customer satisfaction: A guide for business and industry. Van Nostrand Reinhold Company.
Dyfyniad Arddull ChicagoCron, Rodney L. Assuring Customer Satisfaction: A Guide for Business and Industry. New York: Van Nostrand Reinhold Company, 1974.
Dyfyniad MLACron, Rodney L. Assuring Customer Satisfaction: A Guide for Business and Industry. Van Nostrand Reinhold Company, 1974.
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