Não informado. (2015). Pipeline: Management, operations, engineering and gas distribution. Oildom Publishing.
Chicago-referens (17:e uppl.)Não informado. Pipeline: Management, Operations, Engineering and Gas Distribution. Houston, Tex: Oildom Publishing, 2015.
MLA-referens (8:e uppl.)Não informado. Pipeline: Management, Operations, Engineering and Gas Distribution. Oildom Publishing, 2015.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.