APA (7th ed.) Citation

Barker, P. (2004). Problem based learning approach to drilling engineering.

Chicago Style (17th ed.) Citation

Barker, Phil. Problem Based Learning Approach to Drilling Engineering. 2004.

MLA (9th ed.) Citation

Barker, Phil. Problem Based Learning Approach to Drilling Engineering. 2004.

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