National Gallery

Chicago citation style
Pei, I.M., 1917-, Clausen, Meredith L.. National Gallery. 1968-1978. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/buildings/id/4011. (Accessed July 22, 2018.)
APA citation style
Pei, I.M., 1917-, Clausen, Meredith L., (1968-1978) National Gallery. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/buildings/id/4011
MLA citation style
Pei, I.M., 1917-, Clausen, Meredith L.. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/buildings/id/4011>.
Note: These citations are programmatically generated and may be incomplete.