Hertzfeld, H. R. (2002). Space economic data. U.S. Dept. of Commerce, Office of Space Commercialization.
Chicago Style (17th ed.) CitationHertzfeld, Henry R. Space Economic Data. Washington, D.C.: U.S. Dept. of Commerce, Office of Space Commercialization, 2002.
MLA (9th ed.) CitationHertzfeld, Henry R. Space Economic Data. U.S. Dept. of Commerce, Office of Space Commercialization, 2002.
Warning: These citations may not always be 100% accurate.