Syafrizal, Rodi, and Fitrianingsih Fitrianingsih. “Analysis of Islamic Human Resources Performance Policy Management Practices in Private-Owned Enterprises in North Sumatera”. EKONOMIKA SYARIAH : Journal of Economic Studies, vol. 5, no. 2, Jan. 2022, pp. 167-78, doi:10.30983/es.v5i2.4813.