Citace podle APA (7th ed.)
American Association of Cost Engineers & Humphreys, K. K. (1991). Jelen's cost and optimization engineering (3rd ed.). McGraw-Hill.
Citace podle Chicago (17th ed.)
American Association of Cost Engineers a Kenneth King Humphreys. Jelen's Cost and Optimization Engineering. 3rd ed. New York: McGraw-Hill, 1991.
Citace podle MLA (9th ed.)
American Association of Cost Engineers a Kenneth King Humphreys. Jelen's Cost and Optimization Engineering. 3rd ed. McGraw-Hill, 1991.
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