Hamsal, E. . Sundari, I. . Dianto, I. . Hanafi, M. . Arif, dan F. . Hamzah, “The influence of competence and motivation on employee performance in the Payakumbuh Sub-District office of West Sumatra, Limapuluh Regency, West Sumatra City”, SABI, vol. 1, no. 3, hlm. 151–163, Jun 2025.