Schwab, D. J., Lynn, E. W., & Spalding, G. E. (1987). User's manual for GLERL Data Access System (GDAS). U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Great Lakes Environmental Research Laboratory.
Chicago Style (17th ed.) CitationSchwab, David J., Edward W. Lynn, and Gary E. Spalding. User's Manual for GLERL Data Access System (GDAS). Ann Arbor, Mich.: U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Great Lakes Environmental Research Laboratory, 1987.
MLA (9th ed.) CitationSchwab, David J., et al. User's Manual for GLERL Data Access System (GDAS). U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Research Laboratories, Great Lakes Environmental Research Laboratory, 1987.