American Society of Civil Engineers. Task Committee on Steel Penstock Design, ebrary, Inc, & Bambei, J. H. (2012). Steel penstocks (2nd ed.). American Society of Civil Engineers.
Chicago-referens (17:e uppl.)American Society of Civil Engineers. Task Committee on Steel Penstock Design, Inc ebrary, och John H. Bambei. Steel Penstocks. 2nd ed. Reston: American Society of Civil Engineers, 2012.
MLA-referens (9:e uppl.)American Society of Civil Engineers. Task Committee on Steel Penstock Design, et al. Steel Penstocks. 2nd ed. American Society of Civil Engineers, 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.