Britannica Corporation. (1990). Physics [videorecording]: Learning about electric current, electrical circuit you can do it. Encyclopedia Britannica Educational Corporation.
Citace podle Chicago (17th ed.)Britannica Corporation. Physics [videorecording]: Learning About Electric Current, Electrical Circuit You Can Do It. Chicago: Encyclopedia Britannica Educational Corporation, 1990.
Citace podle MLA (9th ed.)Britannica Corporation. Physics [videorecording]: Learning About Electric Current, Electrical Circuit You Can Do It. Encyclopedia Britannica Educational Corporation, 1990.
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