APA (7th ed.) Citation

Brownfield, M. E. (2020). Assessment of tight-gas resources in the Grand Erg/Ahnet Province of Algeria, 2019. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Brownfield, M. E. Assessment of Tight-gas Resources in the Grand Erg/Ahnet Province of Algeria, 2019. [Reston, Virginia]: U.S. Department of the Interior, U.S. Geological Survey, 2020.

MLA (9th ed.) Citation

Brownfield, M. E. Assessment of Tight-gas Resources in the Grand Erg/Ahnet Province of Algeria, 2019. U.S. Department of the Interior, U.S. Geological Survey, 2020.