Yeni Rachmawati, Della Monika Sembiring, and E. W. Surbakti. “Analysis of Human Resource Development in Improving Employee Performance at the Wiraland Property Group”. Jurnal Ekonomi, vol. 11, no. 03, Dec. 2022, pp. 2042-8, https://ejournal.seaninstitute.or.id/index.php/Ekonomi/article/view/1227.