National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, & Blackburn, R. R. (2004). Snow and ice control: Guidelines for materials and methods. Transportation Research Board.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Cooperative Highway Research Program, National Research Council (U.S.). Transportation Research Board, American Association of State Highway and Transportation Officials, United States. Federal Highway Administration, و R. R. Blackburn. Snow and Ice Control: Guidelines for Materials and Methods. Washington, D.C: Transportation Research Board, 2004.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Cooperative Highway Research Program, et al. Snow and Ice Control: Guidelines for Materials and Methods. Transportation Research Board, 2004.