APA
Hillier Parker May and Rowden, . (1989). Central London office rent contour map. - March 1989. London: Hillier Parker May and Rowden.
Chicago
Hillier Parker May and Rowden, . 1989. Central London office rent contour map. - March 1989. London: Hillier Parker May and Rowden.
Harvard
Hillier Parker May and Rowden, . (1989). Central London office rent contour map. - March 1989. London: Hillier Parker May and Rowden.
MLA
Hillier Parker May and Rowden, . Central London office rent contour map. - March 1989. London: Hillier Parker May and Rowden. 1989.