Unwin, D. (1978). The Encyclopedia of educational media communication and technology. Macmillan.
芝加哥风格引文Unwin, Derick. The Encyclopedia of Educational Media Communication and Technology. London: Macmillan, 1978.
MLA引文Unwin, Derick. The Encyclopedia of Educational Media Communication and Technology. Macmillan, 1978.
警告：这些引文格式不一定是100％准确.