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-viite (17. p.)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-viite (8. p.)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.
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