MLA

Office, Oregon. Adjutant-General’s. Report of the Adjutant General of the Territory of Oregon. Asahel Bush, Territorial Printer, 1856. https://collections.library.yale.edu/catalog/2054837.

APA, 6th edition

Office, O. A.-G. (1856). Report of the Adjutant General of the Territory of Oregon [Correspondence, Government records, Inventories, Marginalia, Notes, Proclamations]. Asahel Bush, Territorial Printer. https://collections.library.yale.edu/catalog/2054837.