Spangler, M. G. (1950). Field measurements of the settlement ratios of various highway culverts. Iowa State College of Agriculture and Mechanic Arts.
Chicago Style (17th ed.) CitationSpangler, M. G. Field Measurements of the Settlement Ratios of Various Highway Culverts. Ames: Iowa State College of Agriculture and Mechanic Arts, 1950.
MLA (9th ed.) CitationSpangler, M. G. Field Measurements of the Settlement Ratios of Various Highway Culverts. Iowa State College of Agriculture and Mechanic Arts, 1950.
Warning: These citations may not always be 100% accurate.