Some problems of existence

Chicago citation style
Pearson, Norman. Some problems of existence. 1907. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006569497. (Accessed November 18, 2018.)
APA citation style
Pearson, Norman, (1907) Some problems of existence. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006569497
MLA citation style
Pearson, Norman. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/006569497>.
Note: These citations are programmatically generated and may be incomplete.