APA (7th ed.) Citation

Hansen, W. R., & Johnston, J. E. (1963). Geology of the Landsaw quadrangle, Kentucky. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Hansen, Wallace R., and John E. Johnston. Geology of the Landsaw Quadrangle, Kentucky. Washington, D.C.: U.S. Geological Survey, 1963.

MLA (9th ed.) Citation

Hansen, Wallace R., and John E. Johnston. Geology of the Landsaw Quadrangle, Kentucky. U.S. Geological Survey, 1963.