Walker, D. H. (1996). Planning For Control In The Construction Industry Derek H.t Walker. Informit Electronic Publishing.
Čikaški stil citiranja (17. izdanje)Walker, Derek H.T. Planning For Control In The Construction Industry Derek H.t Walker. Informit Electronic Publishing, 1996.
MLA način citiranja (8. izdanje)Walker, Derek H.T. Planning For Control In The Construction Industry Derek H.t Walker. Informit Electronic Publishing, 1996.
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