Washington observations

Chicago citation style
United States Naval Observatory. Washington observations. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000889457. (Accessed December 14, 2018.)
APA citation style
United States Naval Observatory, Washington observations. Retrieved from the Digital Public Library of America, http://catalog.hathitrust.org/Record/000889457
MLA citation style
United States Naval Observatory. Retrieved from the Digital Public Library of America <http://catalog.hathitrust.org/Record/000889457>.
Note: These citations are programmatically generated and may be incomplete.