Morpace International, Cambridge Systematics, National Research Council (U.S.). Transportation Research Board, Transit Development Corporation, & Transit Cooperative Research Program. (1999). A handbook for measuring customer satisfaction and service quality. National Academy Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Morpace International, Cambridge Systematics, National Research Council (U.S.). Transportation Research Board, Transit Development Corporation, و Transit Cooperative Research Program. A Handbook for Measuring Customer Satisfaction and Service Quality. Washington, D.C: National Academy Press, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Morpace International, et al. A Handbook for Measuring Customer Satisfaction and Service Quality. National Academy Press, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.