APA (7th ed.) Citation

Powll, W. J. (1976). Crude washing. Exxon International Company.

Chicago Style (17th ed.) Citation

Powll, W. J. Crude Washing. New York: Exxon International Company, 1976.

MLA (9th ed.) Citation

Powll, W. J. Crude Washing. Exxon International Company, 1976.

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