United States. Post Office Department. (1911). Regulations governing operations of postal-savings depositories, promulgated by Postmaster General together with Act of Congress approved June 25, 1910, as amended by Act of Mar. 4, 1911. GPO.
Chicago Style (17th ed.) CitationUnited States. Post Office Department. Regulations Governing Operations of Postal-savings Depositories, Promulgated by Postmaster General Together with Act of Congress Approved June 25, 1910, as Amended by Act of Mar. 4, 1911. [Washington]: GPO, 1911.
MLA (9th ed.) CitationUnited States. Post Office Department. Regulations Governing Operations of Postal-savings Depositories, Promulgated by Postmaster General Together with Act of Congress Approved June 25, 1910, as Amended by Act of Mar. 4, 1911. GPO, 1911.