Nkechinyere Mary Harry, Ibrahim Folorunsho, Nnenna Okafor, Oluwatosin Arubuolawe, and Gibson Anugwom, “The Positive Impacts of Employment-Based Contingency on the Treatment of Individuals with Substance Use Disorder: A Systematic Review”, DHRNI-V4, pp. 87–100, Sep. 2024.