Stevenson, J. J. (1882). The geology of Bedford and Fulton Counties: With two colored geological maps. Board of Commissioners for the Second Geological Survey.
Chicago-Zitierstil (17. Ausg.)Stevenson, John James. The Geology of Bedford and Fulton Counties: With Two Colored Geological Maps. Harrisburg: Board of Commissioners for the Second Geological Survey, 1882.
MLA-Zitierstil (9. Ausg.)Stevenson, John James. The Geology of Bedford and Fulton Counties: With Two Colored Geological Maps. Board of Commissioners for the Second Geological Survey, 1882.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.