E. Windhiyana, “DAMPAK COVID-19 TERHADAP KEGIATAN PEMBELAJARAN ONLINE DI SEBUAH PERGURUAN TINGGI KRISTEN DI INDONESIA: THE IMPACT OF COVID-19 ON ONLINE LEARNING ACTIVITIES OF A CHRISTIAN UNIVERSITY IN INDONESIA”, PIP, vol. 34, no. 1, pp. 1–8, Apr. 2020.