Dyfyniad APA

GRANT, E. L., IRESON, W. G., & LEAVENWORTH, R. S. (1982). Principles of engineering economy.-- Ed.7. John Wiley and Sons.

Dyfyniad Arddull Chicago

GRANT, Eugene L., W. Grant IRESON, and Richard S. LEAVENWORTH. Principles of Engineering Economy.-- Ed.7. New York: John Wiley and Sons, 1982.

Dyfyniad MLA

GRANT, Eugene L., et al. Principles of Engineering Economy.-- Ed.7. John Wiley and Sons, 1982.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.