APA (7th ed.) Citation

United States. Congress. House. Committee on Rivers and Harbors & ProQuest (Firm). (1889). Obstructions in Columbia River Letter from the Secretary of War, transmitting the report of a Board of Engineers upon certain obstructions to navigation in the Columbia River in Oregon. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Congress. House. Committee on Rivers and Harbors and ProQuest (Firm). Obstructions in Columbia River Letter from the Secretary of War, Transmitting the Report of a Board of Engineers upon Certain Obstructions to Navigation in the Columbia River in Oregon. Washington: [publisher not identified], 1889.

MLA (9th ed.) Citation

United States. Congress. House. Committee on Rivers and Harbors and ProQuest (Firm). Obstructions in Columbia River Letter from the Secretary of War, Transmitting the Report of a Board of Engineers upon Certain Obstructions to Navigation in the Columbia River in Oregon. [publisher not identified], 1889.