United States. Army. Corps of Engineers. (1917). Engineer field manual, Parts I-VII: I. Reconnaissance; II. Bridges; III. Roads; IV. Railroads; V. Field fortification; VI. Animal transportation; VII. Tables, weights, measures, and specific gravities. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Army. Corps of Engineers. Engineer Field Manual, Parts I-VII: I. Reconnaissance; II. Bridges; III. Roads; IV. Railroads; V. Field Fortification; VI. Animal Transportation; VII. Tables, Weights, Measures, and Specific Gravities. Washington: U.S. GPO, 1917.
MLA (9th ed.) CitationUnited States. Army. Corps of Engineers. Engineer Field Manual, Parts I-VII: I. Reconnaissance; II. Bridges; III. Roads; IV. Railroads; V. Field Fortification; VI. Animal Transportation; VII. Tables, Weights, Measures, and Specific Gravities. U.S. GPO, 1917.