Nguyen Thi Thuy Linh. “Advertisement Frequency in Facebook and Online Buying Behaviour: A Vietnamese Study”. The Sankalpa: International Journal of Management Decisions 3, no. 1 & 2 (December 31, 2017): 90–100. Accessed February 4, 2026. https://www.thesankalpa.org/ijmd/article/view/121.