APA (7th ed.) Citation

De Haan, H. (1995). New developments improved oil recovery. The Geological Society.

Chicago Style (17th ed.) Citation

De Haan, H.J. New Developments Improved Oil Recovery. London: The Geological Society, 1995.

MLA (9th ed.) Citation

De Haan, H.J. New Developments Improved Oil Recovery. The Geological Society, 1995.