M. Tulli Ciceronis Cato maior de senectute liberCato maior de senectute. 1921

Chicago citation style
Cicero, Marcus Tullius. M. Tulli Ciceronis Cato maior de senectute liber,Cato maior de senectute. 1921. [1921]. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006792443. (Accessed December 17, 2018.)
APA citation style
Cicero, Marcus Tullius, ([1921]) M. Tulli Ciceronis Cato maior de senectute liber,Cato maior de senectute. 1921. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/006792443
MLA citation style
Cicero, Marcus Tullius. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/006792443>.
Note: These citations are programmatically generated and may be incomplete.