APA (7th ed.) Citation

Gildersleeve, B., & Johnson, W. D., Jr. (1978). Geologic map of the Spring Lick quadrangle, western Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Gildersleeve, Benjamin, and William D. Johnson, Jr. Geologic Map of the Spring Lick Quadrangle, Western Kentucky. Reston, Va.: U.S. Geological Survey, 1978.

MLA (9th ed.) Citation

Gildersleeve, Benjamin, and William D. Johnson, Jr. Geologic Map of the Spring Lick Quadrangle, Western Kentucky. U.S. Geological Survey, 1978.