APA

Said G. M., Young D. H. & Ibrahim H. K. (1991). Trip generation procedure for areas with structurally different socioeconomic groups. : Transportation Research Record.

Chicago

Said Galal M, Young David H and Ibrahim Hassan K. 1991. Trip generation procedure for areas with structurally different socioeconomic groups. : Transportation Research Record.

Harvard

Said G. M., Young D. H. and Ibrahim H. K. (1991). Trip generation procedure for areas with structurally different socioeconomic groups. : Transportation Research Record.

MLA

Said Galal M, Young David H and Ibrahim Hassan K. Trip generation procedure for areas with structurally different socioeconomic groups. : Transportation Research Record. 1991.