United States. War Department, ProQuest (Firm), & United States. Army. Corps of Engineers. (1821). Fortifications. [publisher not identified].
Chicago Style (17th ed.) CitationUnited States. War Department, ProQuest (Firm), and United States. Army. Corps of Engineers. Fortifications. Washington: [publisher not identified], 1821.
MLA (9th ed.) CitationUnited States. War Department, et al. Fortifications. [publisher not identified], 1821.
Warning: These citations may not always be 100% accurate.