Hoang, T., T. Dinh, D. Nguyen, and N. Bui. “Impacts of the Participation in Multi-Level Marketing Business Model on the Student Life of Viet Nam National University Ho Chi Minh City”. VNUHCM Journal of Social Sciences and Humanities, Vol. 2, no. 4, July 2019, pp. 34-41, doi:https://doi.org/10.32508/stdjssh.v2i4.502.