APA
Knight Frank, . (1998). The M25 office floorspace survey. - Quarter one 1998; Quarter 3 1998 - Quarter 4 1998. London: Knight Frank.
Chicago
Knight Frank, . 1998. The M25 office floorspace survey. - Quarter one 1998; Quarter 3 1998 - Quarter 4 1998. London: Knight Frank.
Harvard
Knight Frank, . (1998). The M25 office floorspace survey. - Quarter one 1998; Quarter 3 1998 - Quarter 4 1998. London: Knight Frank.
MLA
Knight Frank, . The M25 office floorspace survey. - Quarter one 1998; Quarter 3 1998 - Quarter 4 1998. London: Knight Frank. 1998.