United States. Department of the Interior. Office of the Secretary. (1893). Orders, instructions, et cetera, relating to efficiency record and examinations for promotions in Department of Interior, published in Jan. 1893, and superseding all previous orders, circulars, et cetera, on subject. US GPO.
Chicago Style (17th ed.) CitationUnited States. Department of the Interior. Office of the Secretary. Orders, Instructions, Et Cetera, Relating to Efficiency Record and Examinations for Promotions in Department of Interior, Published in Jan. 1893, and Superseding All Previous Orders, Circulars, Et Cetera, on Subject. Washington, D.C.: US GPO, 1893.
MLA (9th ed.) CitationUnited States. Department of the Interior. Office of the Secretary. Orders, Instructions, Et Cetera, Relating to Efficiency Record and Examinations for Promotions in Department of Interior, Published in Jan. 1893, and Superseding All Previous Orders, Circulars, Et Cetera, on Subject. US GPO, 1893.