Xinyi Wang และ William P. Wall. (2017) The business plan of Wangfu coffee house in Dali China. Stamford International University:ม.ป.ท.Xinyi Wang และ William P. Wall. 2017. The business plan of Wangfu coffee house in Dali China. ม.ป.ท.:Stamford International University;Xinyi Wang และ William P. Wall. The business plan of Wangfu coffee house in Dali China. ม.ป.ท.:Stamford International University, 2017. Print.