American Association of Cost Engineers & Humphreys, K. K. (1991). Jelen's cost and optimization engineering (3rd ed.). McGraw-Hill.
Chicago-Zitierstil (17. Ausg.)American Association of Cost Engineers und Kenneth King Humphreys. Jelen's Cost and Optimization Engineering. 3rd ed. New York: McGraw-Hill, 1991.
MLA-Zitierstil (9. Ausg.)American Association of Cost Engineers und Kenneth King Humphreys. Jelen's Cost and Optimization Engineering. 3rd ed. McGraw-Hill, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.