Y. . Tampubolon, B. G. . Simorangkir, W. S. . Simbolon, B. Sinurat, and . C. . Pakpahan, “The Effect Of Using Profile Picture Of Instagram In Teaching Writing Descriptive Text At Tenth Grade Students Of Sma Singosari Delitua”, JPDK, vol. 4, no. 5, pp. 4587–4594, Oct. 2022.