United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry. (1947). Journal. [United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada.
Chicago-referens (17:e uppl.)United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry. Journal. Washington, D.C.: [United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, 1947.
MLA-referens (8:e uppl.)United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry. Journal. [United Association of Journeymen and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.