Dyfyniad APA

Havers, A. J., & Stybbs, W. F. (1971). Handbook of heavy Conctruction (2nd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Havers, A John, and W Frank Stybbs. Handbook of Heavy Conctruction. 2nd ed. New York: McGraw-Hill, 1971.

Dyfyniad MLA

Havers, A John, and W Frank Stybbs. Handbook of Heavy Conctruction. 2nd ed. McGraw-Hill, 1971.

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