Dyfyniad APA

Osborn, L. (2010). Trenchless renewal of culverts and storm sewers (First edition.). American Society of Civil Engineers.

Dyfyniad Arddull Chicago

Osborn, Lynn. Trenchless Renewal of Culverts and Storm Sewers. First edition. Virginia: American Society of Civil Engineers, 2010.

Dyfyniad MLA

Osborn, Lynn. Trenchless Renewal of Culverts and Storm Sewers. First edition. American Society of Civil Engineers, 2010.

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