National five digit zip code and post office directory /
prepared by the Retail Operations Division, Delivery Services Department.
APA Citation
United States Postal Service. National Customer Support Center., United States Postal Service. Address Management., United States Postal Service. Customer Service Support., United States Postal Service. Customer and Automation Services Dept., United States Postal Service. Office of Address Information Systems., United States Postal Service. Address Information Systems Division., United States Postal Service. Retail Operations Division., United States Postal Service. (19812004). National five digit zip code and post office directory. Washington, D.C.: U.S. Postal Service .
MLA Citation
United States Postal Service, et al.. National Five Digit Zip Code And Post Office Directory. Washington, D.C.: U.S. Postal Service , 19812004.