Loop development of the Pennsylvanian terebratulid Cryptacanthia

Chicago citation style
Cooper, G. A. Loop development of the Pennsylvanian terebratulid Cryptacanthia. 1957. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_91961&repo=DPLA. (Accessed November 19, 2018.)
APA citation style
Cooper, G. A, (1957) Loop development of the Pennsylvanian terebratulid Cryptacanthia. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_91961&repo=DPLA
MLA citation style
Cooper, G. A. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_91961&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.