Herlina, V., S. Yacob, J. Johannes, and A. Octavia. “The Role of Social Media Marketing in Improving Marketing Performance for Smes During the Covid-19 Pandemic: A Literature Review ”. Put It Right Journal, vol. 1, no. 1, Feb. 2022, pp. 47-56, doi:10.22437/pirj.v1i1.17183.