TREBJEŠANIN, Žarko M. Hugo Klajn - A Pioneer of Social Pathology in Serbia. Collection of Papers of the Faculty of Philosophy in Priština, [S. l.], v. 49, n. 2, 2019. DOI: 10.5937/zrffp49-22145. Dostupno na: https://asistent.ceon.rs/index.php/zrffp/article/view/22145. Pristupljeno: 12 jul. 2026.