Spring, H. M., & Kohan, A. L. (1981). Boiler operator's guide: Boiler construction, operation, inspection, maintenance, and repair, with typical boiler questions and answers for plant, operating, and maintenance engineers (2d ed.). McGraw-Hill Book Co.
Chicago Style (17th ed.) CitationSpring, Harry Mortimer, and Anthony Lawrence Kohan. Boiler Operator's Guide: Boiler Construction, Operation, Inspection, Maintenance, and Repair, with Typical Boiler Questions and Answers for Plant, Operating, and Maintenance Engineers. 2d ed. New York: McGraw-Hill Book Co, 1981.
MLA (9th ed.) CitationSpring, Harry Mortimer, and Anthony Lawrence Kohan. Boiler Operator's Guide: Boiler Construction, Operation, Inspection, Maintenance, and Repair, with Typical Boiler Questions and Answers for Plant, Operating, and Maintenance Engineers. 2d ed. McGraw-Hill Book Co, 1981.