Não informado. (1944). Ionospheric data. U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory.
Chicago Style (17th ed.) CitationNão informado. Ionospheric Data. Washington: U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory, 1944.
MLA (8th ed.) CitationNão informado. Ionospheric Data. U.S. Department of Commerce, National Bureau of Standards, Central Radio Propagation Laboratory, 1944.
Warning: These citations may not always be 100% accurate.