Aitken, H. G. J. (1976). Syntony and spark: The origins of radio. Wiley.
Lua i Stíl Chicago (17ú heag.)Aitken, Hugh G. J. Syntony and Spark: The Origins of Radio. New York: Wiley, 1976.
Lua MLA (9ú heag.)Aitken, Hugh G. J. Syntony and Spark: The Origins of Radio. Wiley, 1976.
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