Samparu, Pitchaphat, Suphattra Yodsurang, Rachaya Pakdeejit, and Charn Tharawas. 2023. “Managing Personal Savings for Retirement Plan”. Ph.D. In Social Sciences Journal 13 (3):587-601. https://so05.tci-thaijo.org/index.php/phdssj/article/view/262782.