APA (7th ed.) Citation

Schwalb, H. R., Sutton, D. G., & Wilson, E. N. (1971). Oil and gas map of Kentucky. Ky. Geological Survey.

Chicago Style (17th ed.) Citation

Schwalb, Howard R., Donald G. Sutton, and Edward Norman Wilson. Oil and Gas Map of Kentucky. [Lexington]: Ky. Geological Survey, 1971.

MLA (9th ed.) Citation

Schwalb, Howard R., et al. Oil and Gas Map of Kentucky. Ky. Geological Survey, 1971.