Century 21 Exposition telephone book cover, March, 1962

Chicago citation style
Pacific Northwest Bell. Century 21 Exposition telephone book cover, March, 1962. 1962. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3941. (Accessed October 15, 2018.)
APA citation style
Pacific Northwest Bell, (1962) Century 21 Exposition telephone book cover, March, 1962. Retrieved from the Digital Public Library of America, http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3941
MLA citation style
Pacific Northwest Bell. Retrieved from the Digital Public Library of America <http://cdm16786.contentdm.oclc.org/cdm/ref/collection/ptec/id/3941>.
Note: These citations are programmatically generated and may be incomplete.