APA Citation

Willard, B. (1962). Pennsylvania geology summarized. [Harrisburg: Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey.

Chicago Style Citation

Willard, Bradford. Pennsylvania Geology Summarized. [Harrisburg: Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1962.

MLA Citation

Willard, Bradford. Pennsylvania Geology Summarized. [Harrisburg: Commonwealth of Pennsylvania, Dept. of Internal Affairs, Topographic and Geologic Survey, 1962.

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