Sawatrum, P., and P. Pongsukvajchakul. “FACTORS INFLUENCING ON SPECULATION IN INVESTMENT AND INVESTMENT PROPERTY OF THE LISTED COMPANIES ON THE STOCK EXCHANGE OF THAILAND”. Modern Management Journal, vol. 18, no. 1, July 2020, pp. 63-71, https://so04.tci-thaijo.org/index.php/stou-sms-pr/article/view/205689.