Review of the grizzly and big brown bears of North America (genus Ursus) with description of a new genus

Chicago citation style
Merriam, C. Hart (Clinton Hart), 1855-1942. Review of the grizzly and big brown bears of North America (genus Ursus) with description of a new genus. 1918. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001667602. (Accessed October 22, 2018.)
APA citation style
Merriam, C. Hart (Clinton Hart), 1855-1942, (1918) Review of the grizzly and big brown bears of North America (genus Ursus) with description of a new genus. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/001667602
MLA citation style
Merriam, C. Hart (Clinton Hart), 1855-1942. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/001667602>.
Note: These citations are programmatically generated and may be incomplete.