Paul Carlson student drawing of a central group of a national research center

Chicago citation style
Carlson, Paul. Paul Carlson student drawing of a central group of a national research center. 1933. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ac/id/1924. (Accessed October 16, 2018.)
APA citation style
Carlson, Paul, (1933) Paul Carlson student drawing of a central group of a national research center. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ac/id/1924
MLA citation style
Carlson, Paul. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ac/id/1924>.
Note: These citations are programmatically generated and may be incomplete.