Lua APA (7ú heag.)

Não informado. (1920). Journal of the A.I.E.E. American Institute of Electrical Engineers.

Lua i Stíl Chicago (17ú heag.)

Não informado. Journal of the A.I.E.E. New York: American Institute of Electrical Engineers, 1920.

Lua MLA (8ú heag.)

Não informado. Journal of the A.I.E.E. American Institute of Electrical Engineers, 1920.

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