Mulyadi, A., W. Prahiawan, R. Pancasasti, and D. Haryadi. “Predicting Employee Performance through Extrinsic Motivation: A Conceptual Model and Empirical Validation”. Enrichment : Journal of Management, Vol. 12, no. 6, Feb. 2023, pp. 5202-1, doi:10.35335/enrichment.v12i6.1195.