Christine, P. Y. “Analisis Pengaruh Loyalitas Karyawan, Gaya Kepemimpinan Dan Product Knowledge Terhadap Kinerja Karyawan CV Indah Makmur Surabaya”. Research Journal of Social Science and Economics, vol. 1, no. 3, Sept. 2025, pp. 877-90, https://jurnal.untag-sby.ac.id/index.php/rejosse/article/view/9122.