APA Edition Citation

Willoughby, D. A. (2005). Horizontal directional drilling : utility and pipeline applications / by David A. Willoughby: Utility and pipeline applications. McGraw-Hill.

Chicago Edition Citation

Willoughby, David A. Horizontal Directional Drilling : Utility and Pipeline Applications / by David A. Willoughby: Utility and Pipeline Applications. New York ; London: McGraw-Hill, 2005.

MLA Edition Citation

Willoughby, David A. Horizontal Directional Drilling : Utility and Pipeline Applications / by David A. Willoughby: Utility and Pipeline Applications. McGraw-Hill, 2005.