TIYARATTANACHAI, P.; SATHONGEAY, S.; KAMOLNATE, T. Handling Difficult Customers Through Effective Communication. Rajapark Journal, Bangkok, Thailand, v. 14, n. 34, p. 322–336, 2020. Disponível em: https://so05.tci-thaijo.org/index.php/RJPJ/article/view/241038. Acesso em: 17 sep. 2026.