Lua APA (7ú heag.)
American Society of Civil Engineers. Horizontal Directional Drilling Design Guideline Task Committee, Skonberg, E. R., & Muindi, T. M. (2014). Pipeline design for installation by horizontal directional drilling (Second edition.). American Society of Civil Engneers.
Lua i Stíl Chicago (17ú heag.)
American Society of Civil Engineers. Horizontal Directional Drilling Design Guideline Task Committee, Eric R. Skonberg, agus Tennyson M. Muindi. Pipeline Design for Installation by Horizontal Directional Drilling. Second edition. Reston, Virginia: American Society of Civil Engneers, 2014.
Lua MLA (9ú heag.)
American Society of Civil Engineers. Horizontal Directional Drilling Design Guideline Task Committee, et al. Pipeline Design for Installation by Horizontal Directional Drilling. Second edition. American Society of Civil Engneers, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.