APA-referens (7:e uppl.)

Demirdal, B. (2011). Managed pressure drilling. Society of Petroleum Engineers.

Chicago-referens (17:e uppl.)

Demirdal, Barkim. Managed Pressure Drilling. Richardson, TX: Society of Petroleum Engineers, 2011.

MLA-referens (9:e uppl.)

Demirdal, Barkim. Managed Pressure Drilling. Society of Petroleum Engineers, 2011.