APA (7th ed.) Citation

Ali, M. A., & unknown. (1987). Investigation of nitrogen compound types in high-boiling petroleum distillates form Saudi Arabian crude oils.

Chicago Style (17th ed.) Citation

Ali, Mohammed Ashraf, and unknown. Investigation of Nitrogen Compound Types in High-boiling Petroleum Distillates Form Saudi Arabian Crude Oils. 1987.

MLA (9th ed.) Citation

Ali, Mohammed Ashraf, and unknown. Investigation of Nitrogen Compound Types in High-boiling Petroleum Distillates Form Saudi Arabian Crude Oils. 1987.

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