Não informado. (1944). Ionospheric data. U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory.
Čikaški stil citiranja (17. izdanje)Não informado. Ionospheric Data. Washington: U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory, 1944.
MLA način citiranja (8. izdanje)Não informado. Ionospheric Data. U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory, 1944.
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