Dr.DaychoKhaenamkaew. “The Cultivation of Marigolds: A Case Study in the Thon Hong District, Nakhon Si Thammarat Province, Thailand”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 6 (June 6, 2021): 4443–4446. Accessed October 13, 2025. https://turcomat.org/index.php/turkbilmat/article/view/8430.