พัชร์กัญญา ร.; กัมพุอังกูร ศ.; วรรธนโกมล ส. Marketing Mix Factors which Affect the Decision to Purchase Voluntary Motor Insurance. Journal of Humanities and Social Sciences, Rajapruk University, [S. l.], v. 2, n. 3, p. 28–39, 2017. Disponível em: https://so03.tci-thaijo.org/index.php/rpu/article/view/112423. Acesso em: 31 aug. 2026.