Hill Sphere, by Mary Ann Robertson

Chicago citation style
Hill Sphere, by Mary Ann Robertson. Retrieved from the Digital Public Library of America, http://contentdm.acpl.lib.in.us/cdm/ref/collection/coll6/id/4488. (Accessed June 22, 2018.)
APA citation style
Hill Sphere, by Mary Ann Robertson. Retrieved from the Digital Public Library of America, http://contentdm.acpl.lib.in.us/cdm/ref/collection/coll6/id/4488
MLA citation style
Retrieved from the Digital Public Library of America <http://contentdm.acpl.lib.in.us/cdm/ref/collection/coll6/id/4488>.
Note: These citations are programmatically generated and may be incomplete.