Z. Natasya and U. Masahere, “Pengaruh Teamwork dan Self-Efficacy Terhadap Produktivitas Karyawan Pada PT United Farmatic Indonesia: The Influence of Teamwork and Self-Efficacy on Employee Productivity at PT United Farmatic Indonesia”, JMAEKA, vol. 2, no. 4, pp. 811–817, Mar. 2026.