[Aerial Survey of the Philadelphia Region], Plate 20

Chicago citation style
Regional Planning Federation of the Philadelphia Tri-State District. [Aerial Survey of the Philadelphia Region], Plate 20. Retrieved from the Digital Public Library of America, http://libwww.freelibrary.org/diglib/searchItem.cfm?itemID=MPTSAA00023. (Accessed December 12, 2018.)
APA citation style
Regional Planning Federation of the Philadelphia Tri-State District, [Aerial Survey of the Philadelphia Region], Plate 20. Retrieved from the Digital Public Library of America, http://libwww.freelibrary.org/diglib/searchItem.cfm?itemID=MPTSAA00023
MLA citation style
Regional Planning Federation of the Philadelphia Tri-State District. Retrieved from the Digital Public Library of America <http://libwww.freelibrary.org/diglib/searchItem.cfm?itemID=MPTSAA00023>.
Note: These citations are programmatically generated and may be incomplete.