Ayer's Pills - the fight for the standard

Chicago citation style
Ayer's Pills - the fight for the standard. 1870-1900. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/h415pd22j. (Accessed July 15, 2018.)
APA citation style
(1870-1900) Ayer's Pills - the fight for the standard. Retrieved from the Digital Public Library of America, http://ark.digitalcommonwealth.org/ark:/50959/h415pd22j
MLA citation style
Retrieved from the Digital Public Library of America <http://ark.digitalcommonwealth.org/ark:/50959/h415pd22j>.
Note: These citations are programmatically generated and may be incomplete.