Annual report of the Postmaster General.

APA Citation

United States Postal Service. (1989). Annual report of the Postmaster General. [Washington, D.C.: U.S. Postal Service].

MLA Citation

United States Postal Service. Annual Report of the Postmaster General. [Washington, D.C.: U.S. Postal Service], 1989.

Warning: These citations may not always be complete (especially for serials).