Dyfyniad APA

Grant,Eugene L, & Ireson,W Grant. (1982). Principles of engineering economy (7.). John Wiley & Sons.

Dyfyniad Arddull Chicago

Grant,Eugene L, and Ireson,W Grant. Principles of Engineering Economy. 7. New York: John Wiley & Sons, 1982.

Dyfyniad MLA

Grant,Eugene L, and Ireson,W Grant. Principles of Engineering Economy. 7. John Wiley & Sons, 1982.

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