APA (7th ed.) Citation

Johnston, R. S. (1921). Investigation of oxyacetylene welding and cutting blowpipes, with especial reference to their design, safety, and economy in operation. U.S. G.P.O.

Chicago Style (17th ed.) Citation

Johnston, Robert S. Investigation of Oxyacetylene Welding and Cutting Blowpipes, with Especial Reference to Their Design, Safety, and Economy in Operation. [Washington?]: U.S. G.P.O, 1921.

MLA (9th ed.) Citation

Johnston, Robert S. Investigation of Oxyacetylene Welding and Cutting Blowpipes, with Especial Reference to Their Design, Safety, and Economy in Operation. U.S. G.P.O, 1921.