(1977). The economics of new educational media: Present status of research and trends. Unesco.
Chicago Style (17th ed.) ZitazioaThe Economics of New Educational Media: Present Status of Research and Trends. London: Unesco, 1977.
MLA (9th ed.) ZitazioaThe Economics of New Educational Media: Present Status of Research and Trends. Unesco, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.