State Flag, Sri Lanka.

Chicago citation style
State Flag, Sri Lanka.. 1981. Retrieved from the Digital Public Library of America, http://dla.library.upenn.edu/dla/wheeler/image.html?id=WHEELER_mbwsl0004. (Accessed September 19, 2018.)
APA citation style
(1981) State Flag, Sri Lanka.. Retrieved from the Digital Public Library of America, http://dla.library.upenn.edu/dla/wheeler/image.html?id=WHEELER_mbwsl0004
MLA citation style
Retrieved from the Digital Public Library of America <http://dla.library.upenn.edu/dla/wheeler/image.html?id=WHEELER_mbwsl0004>.
Note: These citations are programmatically generated and may be incomplete.