APA
Federation International Des Geometres, . (1998). XXI International Congress : developing the profession in a developing world (Brighton, 19-25 July 1998). London: FIG.
Chicago
Federation International Des Geometres, . 1998. XXI International Congress : developing the profession in a developing world (Brighton, 19-25 July 1998). London: FIG.
Harvard
Federation International Des Geometres, . (1998). XXI International Congress : developing the profession in a developing world (Brighton, 19-25 July 1998). London: FIG.
MLA
Federation International Des Geometres, . XXI International Congress : developing the profession in a developing world (Brighton, 19-25 July 1998). London: FIG. 1998.
