Patch, R. W. (1976). Centroid and moments of an area using a digitizer. National Aeronautics and Space Administration.
Chicago Style (17th ed.) CitationPatch, R. W. Centroid and Moments of an Area Using a Digitizer. Washington, D.C.: National Aeronautics and Space Administration, 1976.
MLA (9th ed.) CitationPatch, R. W. Centroid and Moments of an Area Using a Digitizer. National Aeronautics and Space Administration, 1976.
Warning: These citations may not always be 100% accurate.