Stewart, R. D. (1982). Cost estimating. Wiley.
Cita Chicago (17th ed.)Stewart, Rodney D. Cost Estimating. New York: Wiley, 1982.
Cita MLA (9th ed.)Stewart, Rodney D. Cost Estimating. Wiley, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.