Ampawa N, Montrikul Na Ayudhaya B. Implementation of a code of conduct for human resource officers in happy workplace projects at autonomous universities. HASSS [internet]. 2025 Oct. 30 [cited 2026 Oct. 5];25(3):672–683. available from: https://so02.tci-thaijo.org/index.php/hasss/article/view/270983