Ashworth, A. (1996). Pre-contract studies: Development economics, tendering and estimating. Addison Wesley Longman.
Chicago Style (17th ed.) CitationAshworth, A. Pre-contract Studies: Development Economics, Tendering and Estimating. Harlow: Addison Wesley Longman, 1996.
MLA (9th ed.) CitationAshworth, A. Pre-contract Studies: Development Economics, Tendering and Estimating. Addison Wesley Longman, 1996.
Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.