Wagner, L. (1982). The economics of educational media. Macmillan.
Chicago Style aipamenaWagner, Leslie. The Economics of Educational Media. London: Macmillan, 1982.
MLA aipamenaWagner, Leslie. The Economics of Educational Media. Macmillan, 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.