Heselton, K. E. (2005). Boiler operator's handbook. Fairmont Press.
Chicago Edition CitationHeselton, Kenneth E. Boiler Operator's Handbook. Lilburn: Fairmont Press, 2005.
Cita MLAHeselton, Kenneth E. Boiler Operator's Handbook. Fairmont Press, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.