APA
UNESCO, . (1973). Present situation and trends of research in the field of special education. Paris: United Nations Educational, Scientific and Cultural Organization.
Chicago
UNESCO, . 1973. Present situation and trends of research in the field of special education. Paris: United Nations Educational, Scientific and Cultural Organization.
Harvard
UNESCO, . (1973). Present situation and trends of research in the field of special education. Paris: United Nations Educational, Scientific and Cultural Organization.
MLA
UNESCO, . Present situation and trends of research in the field of special education. Paris: United Nations Educational, Scientific and Cultural Organization. 1973.