Hysing, M., K. J. Petrie, T. Bøe, K. J. Lønning, and B. Sivertsen. “Only the Lonely: A Study of Loneliness Among University Students in Norway”. Clinical Psychology in Europe, Vol. 2, no. 1, Mar. 2020, pp. 1-16, doi:10.32872/cpe.v2i1.2781.