Dyfyniad APA

National Center for Construction Education and Research (U.S.). (2001). Highway/heavy construction: [nccer trainee guide]. Prentice-Hall.

Dyfyniad Arddull Chicago

National Center for Construction Education and Research (U.S.). Highway/heavy Construction: [nccer Trainee Guide]. Upper Saddle River,NJ: Prentice-Hall, 2001.

Dyfyniad MLA

National Center for Construction Education and Research (U.S.). Highway/heavy Construction: [nccer Trainee Guide]. Prentice-Hall, 2001.

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