Pratminingsih, Sri Astuti, et al. “THE EFFECT OF REFERENCE GROUP, ONLINE REVIEW AND PRODUCT RETURN POLICY ON ONLINE PURCHASING DECISIONS”. CENTRAL ASIA AND THE CAUCASUS, vol. 23, no. 1, Jan. 2022, pp. 3399-08, https://ca-c.org/CAC/index.php/cac/article/view/309.