จันทป ช. “SERVICE MARKETING MIX AND EXTERNAL ENVIRONMENT THAT INFLUENCE THE DECISION TO PURCHASE THE HOUSING IN PHRA NAKHON SI AYUTTAYA PROVINCE: Chaowalit Juntop”. Journal of MCU Social Science Review, vol. 7, no. 2, July 2018, pp. 141-5, https://so03.tci-thaijo.org/index.php/jssr/article/view/132818.