Schweyer, H. E. (1955). Process engineering economics. McGraw-Hill.
Cita Chicago (17th ed.)Schweyer, Herbert E. Process Engineering Economics. Nueva York: McGraw-Hill, 1955.
Cita MLA (9th ed.)Schweyer, Herbert E. Process Engineering Economics. McGraw-Hill, 1955.
Atenció: Aquestes cites poden no estar 100% correctes.