Basic concepts of elementary mathematics

Chicago citation style
Schaaf, William Leonard, 1898-. Basic concepts of elementary mathematics. [1960]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000207339. (Accessed October 20, 2018.)
APA citation style
Schaaf, William Leonard, 1898-, ([1960]) Basic concepts of elementary mathematics. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000207339
MLA citation style
Schaaf, William Leonard, 1898-. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/000207339>.
Note: These citations are programmatically generated and may be incomplete.