217231 Ashworth, G. (1973). Encyclopedia of planning. London : Barrie and Jenkins.
Chicago-čujuhus (17. p.)217231 Ashworth, Graham. Encyclopedia of Planning. London : Barrie and Jenkins, 1973.
MLA-čujuhus (9. p.)217231 Ashworth, Graham. Encyclopedia of Planning. London : Barrie and Jenkins, 1973.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.