Pyramid

Chicago citation style
Pyramid. Retrieved from the Digital Public Library of America, http://cdm16855.contentdm.oclc.org/cdm/ref/collection/p16855coll4/id/10830. (Accessed December 12, 2018.)
APA citation style
Pyramid. Retrieved from the Digital Public Library of America, http://cdm16855.contentdm.oclc.org/cdm/ref/collection/p16855coll4/id/10830
MLA citation style
Retrieved from the Digital Public Library of America <http://cdm16855.contentdm.oclc.org/cdm/ref/collection/p16855coll4/id/10830>.
Note: These citations are programmatically generated and may be incomplete.