American Standards Association, & American Standards Association. (1961). Graphical symbols for process flow diagrams: In the petroleum and chemical industries. --. New York, New York: American Society of Mechanical Engineers.
Chicago Style CitationAmerican Standards Association, and American Standards Association. Graphical Symbols for Process Flow Diagrams: In the Petroleum and Chemical Industries. --. New York, New York: American Society of Mechanical Engineers, 1961.
MLA CitationAmerican Standards Association, and American Standards Association. Graphical Symbols for Process Flow Diagrams: In the Petroleum and Chemical Industries. --. New York, New York: American Society of Mechanical Engineers, 1961.
Warning: These citations may not always be 100% accurate.