American Society of Plumbing Engineers. (2022). Plumbing Engineer. Construction Industry Press.
Chicago-referens (17:e uppl.)American Society of Plumbing Engineers. Plumbing Engineer. Elmhurst, Ill: Construction Industry Press, 2022.
MLA-referens (8:e uppl.)American Society of Plumbing Engineers. Plumbing Engineer. Construction Industry Press, 2022.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.