KANTHONG, A.; CHOMJIT, A. สู่จุดสูงสุดของชีวิตด้วย "พีระมิดสามสุข". Pathumthani University Academic Journal, [S. l.], v. 14, n. 1, p. 367–368, 2022. Disponível em: https://so05.tci-thaijo.org/index.php/ptujournal/article/view/260093. Acesso em: 11 dec. 2025.