APA (7th ed.) Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. Educational series. [publisher not identified].

Chicago Style (17th ed.) Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. Educational Series. [Harrisburg]: [publisher not identified].

MLA (9th ed.) Citation

Pennsylvania. Bureau of Topographic and Geologic Survey. Educational Series. [publisher not identified].

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