United States. Post Office Department & ProQuest (Firm). (1941). Annual Report of the Postmaster General for the fiscal year ended June 30, 1941. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Annual Report of the Postmaster General for the Fiscal Year Ended June 30, 1941. Washington: [publisher not identified], 1941.
MLA (9th ed.) CitationUnited States. Post Office Department and ProQuest (Firm). Annual Report of the Postmaster General for the Fiscal Year Ended June 30, 1941. [publisher not identified], 1941.
Warning: These citations may not always be 100% accurate.