HARNWELL, G. P., & Gaylord P. HARNWELL. (1949). Principles of electricity and electromagnetism. 2nd ed. McGraw-Hill.
Citace podle Chicago (17th ed.)HARNWELL, Gaylord P., a Gaylord P. HARNWELL. Principles of Electricity and Electromagnetism. 2nd Ed. New York: McGraw-Hill, 1949.
Citace podle MLA (9th ed.)HARNWELL, Gaylord P., a Gaylord P. HARNWELL. Principles of Electricity and Electromagnetism. 2nd Ed. McGraw-Hill, 1949.
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