Sulaiman, A., M. Ashraf, and N. I. Jaafar. “Impact of Instrumental and Social- Psychological Beliefs on Customer Satisfaction With Online Product Recommendations”. Asian Journal of Business and Accounting, vol. 9, no. 2, Dec. 2016, pp. 141-80, https://ejournal.um.edu.my/index.php/AJBA/article/view/2731.