1. Epstein, A. 2003. Sports Law. New York: Thomson Press.
2. Kasikorn Research Center. (2019). The popularity of football in Thailand: role in the country's economic activities.
3. Kotler, P. & Armstrong, G. 1997. Principle of marketing.8th ed. Englewood Cliffs, New Jersey.Prentice-Hall.
4. Master Alex, L., C.A. Barr and M.A. Hums., 2008. Principle and Practice of Sport Management. 3rd ed. Canada Jones and Bartlett Publishers.
5. Noriya W. (2011). Football agent service in Thailand. Doctor of Education Dissertation, Kasetsart University.