APA (7th ed.) Citation

Helton, T. E., Akgerman, A., Clearfield, A., & Gadalla, A. M. (1991). Methanol and carbon monoxide production from natural gas.

Chicago Style (17th ed.) Citation

Helton, Terry Eugene, Aydin Akgerman, Abraham Clearfield, and Ahmed M. Gadalla. Methanol and Carbon Monoxide Production from Natural Gas. 1991.

MLA (9th ed.) Citation

Helton, Terry Eugene, et al. Methanol and Carbon Monoxide Production from Natural Gas. 1991.