Mahdaria, S., and T. A. Restuaji. “The Effectiveness of Online Coaching through Social Networking Site: A Case Study of Coach Potato Indonesia”. 2021. ELS Journal on Interdisciplinary Studies in Humanities, vol. 4, no. 2, Sept. 2021, pp. 178-87, doi:10.34050/elsjish.v4i2.13888.