เหล่าสุนทร เ. (2019) “Strategies for using the potential of the elderly to develop local communities in Chiang Rai Province”, Mahachula Academic Journal. Bangkok, Thailand, 6(ฉบับพิเศษ), pp. 124–139. available at: https://so04.tci-thaijo.org/index.php/JMA/article/view/181068 (accessed: 6 October 2026).