Dyfyniad APA

National Association of Australian State Road Authorities. (1970). Highway bridge design specification ([4th ed.].). NAASRA.

Dyfyniad Arddull Chicago

National Association of Australian State Road Authorities. Highway Bridge Design Specification. [4th ed.]. [Sydney]: NAASRA, 1970.

Dyfyniad MLA

National Association of Australian State Road Authorities. Highway Bridge Design Specification. [4th ed.]. NAASRA, 1970.

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