APA Citation

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. (1984). New York ZIP+4 state directory. [Washington, DC: United States Postal Service].

MLA Citation

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, and United States Postal Service. Address Information Systems Division. New York ZIP+4 State Directory. [Washington, DC: United States Postal Service], 1984.