APA (7th ed.) Citation

Guo, B., & Ghalambor, A. (2002). Gas volume requirements for underbalanced drilling: Deviated holes. PennWell Corp..

Chicago Style (17th ed.) Citation

Guo, Boyun, and Ali Ghalambor. Gas Volume Requirements for Underbalanced Drilling: Deviated Holes. Tulsa, Okla.: PennWell Corp., 2002.

MLA (9th ed.) Citation

Guo, Boyun, and Ali Ghalambor. Gas Volume Requirements for Underbalanced Drilling: Deviated Holes. PennWell Corp., 2002.

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