APA (7th ed.) Citation

Hadley, J. B., & Nelson, A. E. (1971). Geologic map of the Knoxville quadrangle, North Carolina, Tennessee, and South Carolina. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hadley, Jarvis B., and Arthur E. Nelson. Geologic Map of the Knoxville Quadrangle, North Carolina, Tennessee, and South Carolina. Washington, D.C.: U.S. Geological Survey, 1971.

MLA (9th ed.) Citation

Hadley, Jarvis B., and Arthur E. Nelson. Geologic Map of the Knoxville Quadrangle, North Carolina, Tennessee, and South Carolina. U.S. Geological Survey, 1971.