Syarifuddin Arief, et al. “IMPLEMENTATION OF STANDARD OPERATING PROCEDURE (SOP) IN IMPROVING EMPLOYEE PERFORMANCE IN PT HADJI KALLA DAYA BRANCH MAKASSAR”. Proceeding of The International Conference on Economics and Business, vol. 1, no. 1, June 2022, pp. 20-31, doi:10.55606/iceb.v1i1.132.