Kartini Naradin, Dilla, Hairuddin, Hanitahaiza, Ab Malik, Ariff Md, and Suzila Kassim, Erne. “Online Purchase Intention: Explorations of the Facebook Users’ Psychological Factors”. Advances in Business Research International Journal, vol. 4, no. 2, Dec. 2018, pp. 20-31, doi:10.24191/abrij.v4i2.9990 .