Prapaisri Thamviriyavong ป. ธ. (2018) “The Attitude Towards the Persistence of the Voluntary Insured Persons (Article 40) of Social Security Office, Pathumthani Province”, Dusit Thani College Journal, 12(1), pp. 296–341. Available at: https://so01.tci-thaijo.org/index.php/journaldtc/article/view/118320 (Accessed: 19 April 2024).