APA (7th ed.) Citation

Smith, R. V. (1990). Practical natural gas engineering (2nd ed.). PennWell Books.

Chicago Style (17th ed.) Citation

Smith, R. V. Practical Natural Gas Engineering. 2nd ed. Tulsa, Okla.: PennWell Books, 1990.

MLA (8th ed.) Citation

Smith, R. V. Practical Natural Gas Engineering. 2nd ed. PennWell Books, 1990.

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