Parsell, H. V. A., & Weed, A. J. (1906). Gas engine construction: A practical treatise describing the theory and principles of the action of gas engines of various types and the design and construction of a half horse power gas engine (3rd ed., rev. and enl.). Henley.
Chicago Style (17th ed.) CitationParsell, Henry Van Arsdale, and Arthur J. Weed. Gas Engine Construction: A Practical Treatise Describing the Theory and Principles of the Action of Gas Engines of Various Types and the Design and Construction of a Half Horse Power Gas Engine. 3rd ed., rev. and enl. New York: Henley, 1906.
MLA (9th ed.) CitationParsell, Henry Van Arsdale, and Arthur J. Weed. Gas Engine Construction: A Practical Treatise Describing the Theory and Principles of the Action of Gas Engines of Various Types and the Design and Construction of a Half Horse Power Gas Engine. 3rd ed., rev. and enl. Henley, 1906.