Dyfyniad APA

HARNWELL, G. P., & Gaylord P. HARNWELL. (1949). Principles of electricity and electromagnetism. 2nd ed. McGraw-Hill.

Dyfyniad Arddull Chicago

HARNWELL, Gaylord P., and Gaylord P. HARNWELL. Principles of Electricity and Electromagnetism. 2nd Ed. New York: McGraw-Hill, 1949.

Dyfyniad MLA

HARNWELL, Gaylord P., and Gaylord P. HARNWELL. Principles of Electricity and Electromagnetism. 2nd Ed. McGraw-Hill, 1949.

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