APA
Hillier Parker Research, . (1979). Central London shops survey . - No. 2 (December 1979). London: Hillier Parker May and Rowden.
Chicago
Hillier Parker Research, . 1979. Central London shops survey . - No. 2 (December 1979). London: Hillier Parker May and Rowden.
Harvard
Hillier Parker Research, . (1979). Central London shops survey . - No. 2 (December 1979). London: Hillier Parker May and Rowden.
MLA
Hillier Parker Research, . Central London shops survey . - No. 2 (December 1979). London: Hillier Parker May and Rowden. 1979.