Problems and exercises to accompany Clay's Economics for the general reader, and Ely's Outlines of economics

Chicago citation style
Hayes, Harry Gordon. Problems and exercises to accompany Clay's Economics for the general reader, and Ely's Outlines of economics. 1921. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/009602775. (Accessed October 21, 2018.)
APA citation style
Hayes, Harry Gordon, (1921) Problems and exercises to accompany Clay's Economics for the general reader, and Ely's Outlines of economics. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/009602775
MLA citation style
Hayes, Harry Gordon. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/009602775>.
Note: These citations are programmatically generated and may be incomplete.