Wijaya, Evelyn, et al. “Millennials’ Purchase Intention and Its Effect On Purchase Decision of Eco-Friendly Cosmetic Products in Pekanbaru”. Selangor Business Review, vol. 4, no. 1, June 2019, pp. 46-55, https://sbr.journals.unisel.edu.my/index.php/sbr/article/view/63.