Frederick M. Steingress (2001). Low Pressure Boilers (ed. 4th Edition). American Technical Publishers. ISBN0-8269-4417-5. |edition= has extra text (bantuan)
Frederick M. Steingress, Harold J. Frost and Darryl R. Walker (2003). High Pressure Boilers (ed. 3rd Edition). American Technical Publishers. ISBN0-8269-4300-4. |edition= has extra text (bantuan)