Cambrian Geology and Paleontology II: No 10--group terms for the lower and upper Cambrian series of formations

Chicago citation style
Walcott, Charles D. Cambrian Geology and Paleontology II: No 10--group terms for the lower and upper Cambrian series of formations. 1912. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_145159&repo=DPLA. (Accessed November 14, 2018.)
APA citation style
Walcott, Charles D, (1912) Cambrian Geology and Paleontology II: No 10--group terms for the lower and upper Cambrian series of formations. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_145159&repo=DPLA
MLA citation style
Walcott, Charles D. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3ASILSRO_145159&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.