Tohutoro APA (7th ed.)

Jelen, F. C. (1970). Cost and optimization engineering. McGraw-Hill.

Tohutoru Kātū Chicago

Jelen, Frederic Charles. Cost and Optimization Engineering. New York Maidenhead: McGraw-Hill, 1970.

Tohutoro MLA

Jelen, Frederic Charles. Cost and Optimization Engineering. McGraw-Hill, 1970.