Colwell, D. A. Evaluation of high-density polyethylene pipe installed using horizontal directional drilling. Journal of construction engineering and management.
Chicago Style (17th ed.) CitationColwell, Donald A. "Evaluation of High-density Polyethylene Pipe Installed Using Horizontal Directional Drilling." Journal of Construction Engineering and Management .
MLA (9th ed.) CitationColwell, Donald A. "Evaluation of High-density Polyethylene Pipe Installed Using Horizontal Directional Drilling." Journal of Construction Engineering and Management, .
Warning: These citations may not always be 100% accurate.