Duff, J. R. (1969). Alternating current Fundamentals: John R . Duff. Taraporevala.
Tohutoru Kātū Chicago (17th ed.)Duff, John R. Alternating Current Fundamentals: John R . Duff. Bombay: Taraporevala, 1969.
Tohutoro MLA (9th ed.)Duff, John R. Alternating Current Fundamentals: John R . Duff. Taraporevala, 1969.
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