Heselton, K. E. (2014). Boiler operator's handbook (Second edition.). The Fairmont Press, Inc. : CRC Press.
Chicago Style (17th ed.) ZitazioaHeselton, Kenneth E. Boiler Operator's Handbook. Second edition. Lilburn, Georgia: The Fairmont Press, Inc. : CRC Press, 2014.
MLA (9th ed.) ZitazioaHeselton, Kenneth E. Boiler Operator's Handbook. Second edition. The Fairmont Press, Inc. : CRC Press, 2014.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.