(1977). The economics of new educational media: Present status of research and trends. Unesco.
Čikaški stil citiranja (17. izdanje)The Economics of New Educational Media: Present Status of Research and Trends. London: Unesco, 1977.
MLA način citiranja (9. izdanje)The Economics of New Educational Media: Present Status of Research and Trends. Unesco, 1977.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.