Dyfyniad APA

American Society of Civil Engineers. Pipeline Division, ebrary, Inc, Hovland, T. J., & Najafi, M. (2009). Inspecting pipeline installation. American Society of Civil Engineers.

Dyfyniad Arddull Chicago

American Society of Civil Engineers. Pipeline Division, Inc ebrary, T. J. Hovland, and Mohammad Najafi. Inspecting Pipeline Installation. Reston, VA: American Society of Civil Engineers, 2009.

Dyfyniad MLA

American Society of Civil Engineers. Pipeline Division, et al. Inspecting Pipeline Installation. American Society of Civil Engineers, 2009.

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