New dial system for telephones

Chicago citation style
New dial system for telephones. 1951-1951. Retrieved from the Digital Public Library of America, http://search.lib.virginia.edu/catalog/uva-lib:2156410. (Accessed October 21, 2018.)
APA citation style
(1951-1951) New dial system for telephones. Retrieved from the Digital Public Library of America, http://search.lib.virginia.edu/catalog/uva-lib:2156410
MLA citation style
Retrieved from the Digital Public Library of America <http://search.lib.virginia.edu/catalog/uva-lib:2156410>.
Note: These citations are programmatically generated and may be incomplete.