APA Citation

Ashley, G. H. 1. (1933). The scenery of Pennsylvania: Its origin and development based on recent studies of physiographic and glacial history. Harrisburg, Pa.: Pennsylvania Topographic and Geologic Survey.

Chicago Style Citation

Ashley, Geo. H. 1866-1951. The Scenery of Pennsylvania: Its Origin and Development Based On Recent Studies of Physiographic and Glacial History. Harrisburg, Pa.: Pennsylvania Topographic and Geologic Survey, 1933.

MLA Citation

Ashley, Geo. H. 1866-1951. The Scenery of Pennsylvania: Its Origin and Development Based On Recent Studies of Physiographic and Glacial History. Harrisburg, Pa.: Pennsylvania Topographic and Geologic Survey, 1933.

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