APA (7th ed.) Citation

(1891). Geological maps of Schuylkill, Carbon, Berks and Dauphin counties. Topographical map of the Blue mountain at Port Clinton, in two sheets.

Chicago Style (17th ed.) Citation

Geological Maps of Schuylkill, Carbon, Berks and Dauphin Counties. Topographical Map of the Blue Mountain at Port Clinton, in Two Sheets. 1891.

MLA (9th ed.) Citation

Geological Maps of Schuylkill, Carbon, Berks and Dauphin Counties. Topographical Map of the Blue Mountain at Port Clinton, in Two Sheets. 1891.

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