Elementary college mathematics

Chicago citation style
Mackie, Ernest Lloyd, 1893-. Elementary college mathematics. [1940]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000207487. (Accessed October 20, 2018.)
APA citation style
Mackie, Ernest Lloyd, 1893-, ([1940]) Elementary college mathematics. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000207487
MLA citation style
Mackie, Ernest Lloyd, 1893-. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/000207487>.
Note: These citations are programmatically generated and may be incomplete.