Wilson Bentley's Snowflake 349, c. 1890

Chicago citation style
Bentley, W. A (Wilson Alwyn) 1865-1931. Wilson Bentley's Snowflake 349, c. 1890. 1890. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_308077&repo=DPLA. (Accessed June 19, 2018.)
APA citation style
Bentley, W. A (Wilson Alwyn) 1865-1931, (1890) Wilson Bentley's Snowflake 349, c. 1890. Retrieved from the Digital Public Library of America, http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_308077&repo=DPLA
MLA citation style
Bentley, W. A (Wilson Alwyn) 1865-1931. Retrieved from the Digital Public Library of America <http://collections.si.edu/search/results.htm?q=record_ID%3Asiris_arc_308077&repo=DPLA>.
Note: These citations are programmatically generated and may be incomplete.