O. Diana Putri and R. Muslinawati, “KEHADIRAN OJEK ONLINE (GRAB) TERHADAP EKSISTENSI OJEK KONVENSIONAL DI KABUPATEN BOJONEGORO: THE PRESENCE OF ONLINE OJEK (GRAB) TO THE EXISTENCE OF CONVENTIONAL OJEK IN BOJONEGORO DISTRICT”, JMS, vol. 3, no. 1, pp. 1–11, Jan. 2020.