Vongkamphu และ Yosita. (2012) Measures a Relationship between a Service Quality Customer Satisfaction and Customer Loyalty of Fast Food Outlet of Pingo Outlet, South Africa. University of the Thai Chamber of Commerce:ม.ป.ท.Vongkamphu และ Yosita. 2012. Measures a Relationship between a Service Quality Customer Satisfaction and Customer Loyalty of Fast Food Outlet of Pingo Outlet, South Africa. ม.ป.ท.:University of the Thai Chamber of Commerce;Vongkamphu และ Yosita. Measures a Relationship between a Service Quality Customer Satisfaction and Customer Loyalty of Fast Food Outlet of Pingo Outlet, South Africa. ม.ป.ท.:University of the Thai Chamber of Commerce, 2012. Print.