DUTTA, B. N., & DUTTA, B. N. (1991). Estimating And Costing In Civil Engineering Theory And Practice Bn. Dutta. UBS Publishers' Distributors.
Chicago-referens (17:e uppl.)DUTTA, B N., och B N. DUTTA. Estimating And Costing In Civil Engineering Theory And Practice Bn. Dutta. UBS Publishers' Distributors, 1991.
MLA-referens (8:e uppl.)DUTTA, B N., och B N. DUTTA. Estimating And Costing In Civil Engineering Theory And Practice Bn. Dutta. UBS Publishers' Distributors, 1991.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.