A revision of the fossil ferns from the Potomac group which have been referred to the genera Cladophlebis and Thyrsopteris

Chicago citation style
Berry, Edward Wilber. A revision of the fossil ferns from the Potomac group which have been referred to the genera Cladophlebis and Thyrsopteris. 1911. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_85785&repo=DPLA. (Accessed November 15, 2018.)
APA citation style
Berry, Edward Wilber, (1911) A revision of the fossil ferns from the Potomac group which have been referred to the genera Cladophlebis and Thyrsopteris. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_85785&repo=DPLA
MLA citation style
Berry, Edward Wilber. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_85785&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.