APA (7th ed.) Citation

Paul, P. F., & Wise, W. S. (1971). The principles of gas extraction. Mills & Boon.

Chicago Style (17th ed.) Citation

Paul, P. F., and W. S. Wise. The Principles of Gas Extraction. London: Mills & Boon, 1971.

MLA (9th ed.) Citation

Paul, P. F., and W. S. Wise. The Principles of Gas Extraction. Mills & Boon, 1971.

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