INSAMIAN, R.; PUNYALIKHIT , R.; JONEURAIRATANA, E. Use of Design Thinking Process for Factors and Preparation Guideline of Being a Happy Elderly Person. วารสารสันติศึกษาปริทรรศน์ มจร, [S. l.], v. 11, n. 5, p. 1679–1694, 2023. Disponível em: https://so03.tci-thaijo.org/index.php/journal-peace/article/view/264653. Acesso em: 27 ส.ค. 2026.