โตจิระ โ. Polarity Indicators and Scales. KKU Science Journal, [S. l.], v. 45, n. 1, p. 17–33, 2017. Disponível em: https://ph01.tci-thaijo.org/index.php/KKUSciJ/article/view/249660. Acesso em: 19 sep. 2026.