"Snowflake"

Chicago citation style
"Snowflake". 1960-12-13. Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/46241. (Accessed December 18, 2018.)
APA citation style
(1960-12-13) "Snowflake". Retrieved from the Digital Public Library of America, http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/46241
MLA citation style
Retrieved from the Digital Public Library of America <http://digital.library.temple.edu/cdm/ref/collection/p15037coll3/id/46241>.
Note: These citations are programmatically generated and may be incomplete.