Eastern Book Company. Gas Cylinders Rules,2004 (2nd.). Eastern Book Company.
Chicago-referens (17:e uppl.)Eastern Book Company. Gas Cylinders Rules,2004. 2nd. Lucknow Lucknow: Eastern Book Company.
MLA-referens (9:e uppl.)Eastern Book Company. Gas Cylinders Rules,2004. 2nd. Eastern Book Company.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.