Papacostas, C. (1993). Transportation engineering and planning (2nd.ed.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Papacostas, C.S. Transportation Engineering and Planning. 2nd.ed. Englewood Cliffs: Prentice Hall, 1993.
Lua MLA (9ú heag.)Papacostas, C.S. Transportation Engineering and Planning. 2nd.ed. Prentice Hall, 1993.
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