Najafi, M., & Gokhale, S. (2005). Trenchless technology: Pipeline and utility design, construction, and renewal. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Najafi, Mohammad, agus Sanjiv Gokhale. Trenchless Technology: Pipeline and Utility Design, Construction, and Renewal. New York: McGraw-Hill, 2005.
Lua MLA (9ú heag.)Najafi, Mohammad, agus Sanjiv Gokhale. Trenchless Technology: Pipeline and Utility Design, Construction, and Renewal. McGraw-Hill, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.