Ryan, J. V., & Karns, S. A. (1993). Development of sampling and analytical methods for the measurement of nitrous oxide from fossil fuel combustion sources: Project summary. U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory.
Chicago Style (17th ed.) CitationRyan, Jeffrey V., and Shawn A. Karns. Development of Sampling and Analytical Methods for the Measurement of Nitrous Oxide from Fossil Fuel Combustion Sources: Project Summary. Research Triangle Park, NC: U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1993.
MLA (8th ed.) CitationRyan, Jeffrey V., and Shawn A. Karns. Development of Sampling and Analytical Methods for the Measurement of Nitrous Oxide from Fossil Fuel Combustion Sources: Project Summary. U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory, 1993.