APA
U.S. Department of Transportation. FHWA. Office of Research and Development, . (1980). Expansive soils in highway subgrades. Washington DC: U.S. Department of Transportation. FHWA. Office of Research and Development.
Chicago
U.S. Department of Transportation. FHWA. Office of Research and Development, . 1980. Expansive soils in highway subgrades. Washington DC: U.S. Department of Transportation. FHWA. Office of Research and Development.
Harvard
U.S. Department of Transportation. FHWA. Office of Research and Development, . (1980). Expansive soils in highway subgrades. Washington DC: U.S. Department of Transportation. FHWA. Office of Research and Development.
MLA
U.S. Department of Transportation. FHWA. Office of Research and Development, . Expansive soils in highway subgrades. Washington DC: U.S. Department of Transportation. FHWA. Office of Research and Development. 1980.