APA (7th ed.) Citation

Knovel (Firm). (2015). DC drill bits (1st edition.). International Association of Drilling Contractors.

Chicago Style (17th ed.) Citation

Knovel (Firm). DC Drill Bits. 1st edition. Houston, Texas: International Association of Drilling Contractors, 2015.

MLA (9th ed.) Citation

Knovel (Firm). DC Drill Bits. 1st edition. International Association of Drilling Contractors, 2015.

Warning: These citations may not always be 100% accurate.