Gramling, W. L. (1994). Current practices in determining pavement condition. National Academy Press.
芝加哥风格引文Gramling, W. L. Current Practices in Determining Pavement Condition. Washington, D.C: National Academy Press, 1994.
MLA引文Gramling, W. L. Current Practices in Determining Pavement Condition. National Academy Press, 1994.
警告：这些引文格式不一定是100％准确.