APA (7th ed.) Citation

Geological Survey (U.S.) & Higley, D. K. (1992). Map showing wells drilled to depths [greater than or equal to] 10,000 feet in the north-central Gulf Coast region. The Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.) and Debra K. Higley. Map Showing Wells Drilled to Depths [greater than or Equal to] 10,000 Feet in the North-central Gulf Coast Region. Reston, VA: The Survey, 1992.

MLA (9th ed.) Citation

Geological Survey (U.S.) and Debra K. Higley. Map Showing Wells Drilled to Depths [greater than or Equal to] 10,000 Feet in the North-central Gulf Coast Region. The Survey, 1992.