Simple addition by a little nigger ([pp. 7-8])

Chicago citation style
Simple addition by a little nigger ([pp. 7-8]). ca. 1880. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/childrens/id/845. (Accessed June 24, 2018.)
APA citation style
(ca. 1880) Simple addition by a little nigger ([pp. 7-8]). Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/childrens/id/845
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/childrens/id/845>.
Note: These citations are programmatically generated and may be incomplete.