Choomnirat R, Ritthidach P. Relationship between Operational Efficiency and Firm Value of The Listed Companies in Thailand Sustainability Investment. soc sci hum utcc [internet]. 2023 Jun. 30 [cited 2026 Aug. 28];43(2):39-60. available from: https://so06.tci-thaijo.org/index.php/utccjournalhs/article/view/263111