Ashworth, A. (1983). Building economics and cost control: Worked solutions. Butterworths.
Lua i Stíl Chicago (17ú heag.)Ashworth, A. Building Economics and Cost Control: Worked Solutions. London: Butterworths, 1983.
Lua MLA (9ú heag.)Ashworth, A. Building Economics and Cost Control: Worked Solutions. Butterworths, 1983.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.