APA Citation

Clemson, T. G. (1834). Observations on the geology of York County, Pa. Philadelphia: W.P. Gibbons, printer.

Chicago Style Citation

Clemson, Thomas Green. Observations On the Geology of York County, Pa. Philadelphia: W.P. Gibbons, printer, 1834.

MLA Citation

Clemson, Thomas Green. Observations On the Geology of York County, Pa. Philadelphia: W.P. Gibbons, printer, 1834.

Warning: These citations may not always be 100% accurate.