United States. Army. Corps of Engineers & ProQuest (Firm). (1909). Maintenance of river and harbor works. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. Army. Corps of Engineers and ProQuest (Firm). Maintenance of River and Harbor Works. Washington: [publisher not identified], 1909.
MLA (9th ed.) CitationUnited States. Army. Corps of Engineers and ProQuest (Firm). Maintenance of River and Harbor Works. [publisher not identified], 1909.
Warning: These citations may not always be 100% accurate.