Sherlock, G. L. (1954). Blue book of plumbing estimating: A practical reference book for plumbing contractors and journeymen. Estimating Handbooks Associates.
Chicago Style (17th ed.) CitationSherlock, George L. Blue Book of Plumbing Estimating: A Practical Reference Book for Plumbing Contractors and Journeymen. DeKalb, Ill.: Estimating Handbooks Associates, 1954.
MLA (9th ed.) CitationSherlock, George L. Blue Book of Plumbing Estimating: A Practical Reference Book for Plumbing Contractors and Journeymen. Estimating Handbooks Associates, 1954.
Warning: These citations may not always be 100% accurate.