Παραπομπή APA

Heselton, K. E. (2005). Boiler operator's handbook. Fairmont Press.

Παραπομπή Chicago Style

Heselton, Kenneth E. Boiler Operator's Handbook. Lilburn: Fairmont Press, 2005.

Παραπομπή MLA

Heselton, Kenneth E. Boiler Operator's Handbook. Fairmont Press, 2005.