Parsons, C. W. S. (1957). Estimating machining costs. McGraw-Hill.
Cita Chicago (17th ed.)Parsons, C. W. S. Estimating Machining Costs. New York: McGraw-Hill, 1957.
Cita MLA (8th ed.)Parsons, C. W. S. Estimating Machining Costs. McGraw-Hill, 1957.
Atenció: Aquestes cites poden no estar 100% correctes.