PITAKTEPSOMBATI, P. .; VORKLARNG, W. Who Returned Postcard in the Poll. Journal of Population and Social Studies [JPSS], [S. l.], v. 3, n. 1-2, p. 145–150, 2023. Disponível em: https://so03.tci-thaijo.org/index.php/jpss/article/view/268453. Acesso em: 19 may. 2024.