Sanrang, Laila Noor Azizah, et al. “EFFECT OF SYSTEM WORK FROM HOME (WFH) AND COMMUNICATION ON EMPLOYEE PERFORMANCE AT PT. ULTRA JAYA MILK INDUSTRY & TRADING COMPANY TBK”. CENTRAL ASIA AND THE CAUCASUS, vol. 23, no. 1, Jan. 2022, pp. 4724-3, https://ca-c.org/CAC/index.php/cac/article/view/466.