Encyclopaedia Britannica Educational Corporation, & Encyclopaedia Britannica Educational Corporation. (1976). Learning about light (2. edición --.). Chicago, III.: Encyclopaedia Britannica Educational Corp.
Chicago Style CitationEncyclopaedia Britannica Educational Corporation, and Encyclopaedia Britannica Educational Corporation. Learning About Light. 2. edición --. Chicago, III.: Encyclopaedia Britannica Educational Corp, 1976.
MLA CitationEncyclopaedia Britannica Educational Corporation, and Encyclopaedia Britannica Educational Corporation. Learning About Light. 2. edición --. Chicago, III.: Encyclopaedia Britannica Educational Corp, 1976.
Warning: These citations may not always be 100% accurate.