Petaluma Cooperative Creamery picnic, circa 1928

Chicago citation style
Petaluma Cooperative Creamery picnic, circa 1928. 1928. Retrieved from the Digital Public Library of America, http://heritage.sonomalibrary.org/cdm/ref/collection/p15763coll17/id/370. (Accessed December 10, 2018.)
APA citation style
(1928) Petaluma Cooperative Creamery picnic, circa 1928. Retrieved from the Digital Public Library of America, http://heritage.sonomalibrary.org/cdm/ref/collection/p15763coll17/id/370
MLA citation style
Retrieved from the Digital Public Library of America <http://heritage.sonomalibrary.org/cdm/ref/collection/p15763coll17/id/370>.
Note: These citations are programmatically generated and may be incomplete.