APA
International Congress on Project Planning by Betwork Analysis (2nd : 1969 : Amsterdam Netherland), . (1969). Proceedings edited by H. J. M. Lombaers. Amsterdam: North Holland Netherland.
Chicago
International Congress on Project Planning by Betwork Analysis (2nd : 1969 : Amsterdam Netherland), . 1969. Proceedings edited by H. J. M. Lombaers. Amsterdam: North Holland Netherland.
Harvard
International Congress on Project Planning by Betwork Analysis (2nd : 1969 : Amsterdam Netherland), . (1969). Proceedings edited by H. J. M. Lombaers. Amsterdam: North Holland Netherland.
MLA
International Congress on Project Planning by Betwork Analysis (2nd : 1969 : Amsterdam Netherland), . Proceedings edited by H. J. M. Lombaers. Amsterdam: North Holland Netherland. 1969.
