Dutta, B. (1982). Estimating and costing in civil engineering: Theory and practice (17th ed.). S. Dutta.
Lua i Stíl Chicago (17ú heag.)Dutta, B.N. Estimating and Costing in Civil Engineering: Theory and Practice. 17th ed. Lucknow: S. Dutta, 1982.
Lua MLA (9ú heag.)Dutta, B.N. Estimating and Costing in Civil Engineering: Theory and Practice. 17th ed. S. Dutta, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.