Vâlsan, George. “Cercetările Sociologice Privite Din Punct De Vedere Geografic: Geographical Approach of Sociological Research Works”. Sociologie Românească 2, no. 3-4 (August 30, 1991): 183-192. Accessed April 17, 2026. https://arsociologie.ro/revistasociologieromaneasca/sr/article/view/1391.