United States. Postmaster General. (1908). Navy mail service: Instructions for guidance of Navy mail clerks and assistant Navy mail clerks authorized by Act of Congress, approved May 27, 1908, promulgated by authority of Postmaster-General. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Postmaster General. Navy Mail Service: Instructions for Guidance of Navy Mail Clerks and Assistant Navy Mail Clerks Authorized by Act of Congress, Approved May 27, 1908, Promulgated by Authority of Postmaster-General. Washington, D.C.: [publisher not identified], 1908.
MLA (9th ed.) CitationUnited States. Postmaster General. Navy Mail Service: Instructions for Guidance of Navy Mail Clerks and Assistant Navy Mail Clerks Authorized by Act of Congress, Approved May 27, 1908, Promulgated by Authority of Postmaster-General. [publisher not identified], 1908.