APA Citation

....., C. M. P. Common mud problems and techniques. American Petroleum Institute Driling Fluids.

Chicago Style Citation

....., Common Mud Problem. Common Mud Problems and Techniques. American Petroleum Institute Driling Fluids.

MLA Citation

....., Common Mud Problem. Common Mud Problems and Techniques. American Petroleum Institute Driling Fluids.

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