APA

PIARC. World road congress, World Road Association P., . (2004). PIARC XXIInd world road congress, 19-25 October 2003, Durban (South Africa). Proceedings. Paris: PIARC. World road congress.

Chicago

PIARC. World road congress, World Road Association PIARC, . 2004. PIARC XXIInd world road congress, 19-25 October 2003, Durban (South Africa). Proceedings. Paris: PIARC. World road congress.

Harvard

PIARC. World road congress, World Road Association P., . (2004). PIARC XXIInd world road congress, 19-25 October 2003, Durban (South Africa). Proceedings. Paris: PIARC. World road congress.

MLA

PIARC. World road congress, World Road Association PIARC, . PIARC XXIInd world road congress, 19-25 October 2003, Durban (South Africa). Proceedings. Paris: PIARC. World road congress. 2004.