Chang, R. Y., & Kelly, P. K. (1994). Satisfying internal customers first: A practical guide to improving internal and external customer satisfaction. Wheeler Publishing.
استشهاد بنمط شيكاغوChang, Richard Y., و P. Keith Kelly. Satisfying Internal Customers First: A Practical Guide to Improving Internal and External Customer Satisfaction. New Delhi: Wheeler Publishing, 1994.
MLA استشهادChang, Richard Y., و P. Keith Kelly. Satisfying Internal Customers First: A Practical Guide to Improving Internal and External Customer Satisfaction. Wheeler Publishing, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.