I. H. Kusuma, B. Wibawa, and B. P. Sitepu, “The Implementation of the Levenberg-Marquardt for Continuous Improvement of the Management System for BPK PENABUR Education Foundation in Jakarta”, IJET, vol. 7, no. 3.36, pp. 160–163, May 2018, doi: 10.14419/ijet.v7i3.36.29099.