APA (7th ed.) Citation

Trexler, J. P., & Wood, G. H. (1968). Geologic map of the Klingerstown quadrangle, Northumberland, Schuylkill, and Dauphin counties, Pennsylvania. U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Trexler, J. Peter, and Gordon H. Wood. Geologic Map of the Klingerstown Quadrangle, Northumberland, Schuylkill, and Dauphin Counties, Pennsylvania. Washington, D.C.: U.S. Geological Survey, 1968.

MLA (8th ed.) Citation

Trexler, J. Peter, and Gordon H. Wood. Geologic Map of the Klingerstown Quadrangle, Northumberland, Schuylkill, and Dauphin Counties, Pennsylvania. U.S. Geological Survey, 1968.