Germane, Gayton E., author
McGraw-Hill, 1963
Buku Teks
Rao, G.Venkatappa
McGraw-Hill , 1996
Buku Teks
Coyle, John J. (John Joseph), 1935-, author
South Western Cengage Learning, 2011
Buku Teks
American Association of State Highway and Transportation Officials, 1973
Buku Teks
edited by George E. Gray, Lester A. Hoel
Prentice-Hall, 1979
Buku Teks