Humenik, F. M., Lezberg, E. A., & Otterson, D. A. (1980). Sulfate and nitrate collected by filter sampling near the tropopause. National Aeronautics and Space Administration, Scientific and Technical Information Office.
Chicago Style (17th ed.) CitationHumenik, Francis M., Erwin A. Lezberg, and Dumas A. Otterson. Sulfate and Nitrate Collected by Filter Sampling Near the Tropopause. Washington: National Aeronautics and Space Administration, Scientific and Technical Information Office, 1980.
MLA (8th ed.) CitationHumenik, Francis M., et al. Sulfate and Nitrate Collected by Filter Sampling Near the Tropopause. National Aeronautics and Space Administration, Scientific and Technical Information Office, 1980.
Warning: These citations may not always be 100% accurate.