National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, & Stark, T. D. (2004). Guideline and recommended standard for Geofoam applications in highway embankments. Transportation Research Board, National Research Council.
Cita Chicago (17th ed.)National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, i Timothy D. Stark. Guideline and Recommended Standard for Geofoam Applications in Highway Embankments. Washington, D.C: Transportation Research Board, National Research Council, 2004.
Cita MLA (9th ed.)National Cooperative Highway Research Program, et al. Guideline and Recommended Standard for Geofoam Applications in Highway Embankments. Transportation Research Board, National Research Council, 2004.