APA (7th ed.) Citation

Osborne, W. E., Copeland, C. W., & Wheat, D. H. (1989). Geologic map of Alabama. Geological Survey of Alabama.

Chicago Style (17th ed.) Citation

Osborne, W. Edward, Charles W. Copeland, and Donald H. Wheat. Geologic Map of Alabama. [University, Ala.]: Geological Survey of Alabama, 1989.

MLA (9th ed.) Citation

Osborne, W. Edward, et al. Geologic Map of Alabama. Geological Survey of Alabama, 1989.