Kevin, T. T.; Kuiate F. Gaetan; Bertin, S. F. Driving Operational Excellence in Higher Learning Institutions: Integrating Shingo Model, Lean Six Sigma, Hoshin Kanri. Glob. J. Eng. Technol. Res. 2026, 2 (02), 38-47. https://doi.org/10.65150/EP-gjetr/V2E2/2026-02.