Charles Albert Dickson (1870-1938), Certificate of Proficiency Towne Scientific School 1891

Chicago citation style
Dickson, Charles Albert. Charles Albert Dickson (1870-1938), Certificate of Proficiency Towne Scientific School 1891. 1890. Retrieved from the Digital Public Library of America, http://dla.library.upenn.edu/dla/archives/image.html?id=ARCHIVES_20050324006. (Accessed December 17, 2018.)
APA citation style
Dickson, Charles Albert, (1890) Charles Albert Dickson (1870-1938), Certificate of Proficiency Towne Scientific School 1891. Retrieved from the Digital Public Library of America, http://dla.library.upenn.edu/dla/archives/image.html?id=ARCHIVES_20050324006
MLA citation style
Dickson, Charles Albert. Retrieved from the Digital Public Library of America <http://dla.library.upenn.edu/dla/archives/image.html?id=ARCHIVES_20050324006>.
Note: These citations are programmatically generated and may be incomplete.