Septyawan, D. A., and H. Ubaidillah. “Communication in Employee Productivity in Transportation Service Companies: Komunikasi Dalam Produktivitas Kerja Karyawan Pada Perusahaan Layanan Transportasi”. Academia Open, vol. 8, no. 1, June 2023, p. 10.21070/acopen.8.2023.4100, doi:10.21070/acopen.8.2023.4100.