DUTTA, B. N., & DUTTA, B. N. (1991). Estimating And Costing In Civil Engineering Theory And Practice Bn. Dutta. UBS Publishers' Distributors.
Παραπομπή σε μορφή Chicago (17η εκδ.)DUTTA, B N., και B N. DUTTA. Estimating And Costing In Civil Engineering Theory And Practice Bn. Dutta. UBS Publishers' Distributors, 1991.
Παραπομπή σε μορφή MLA (8th εκδ.)DUTTA, B N., και B N. DUTTA. Estimating And Costing In Civil Engineering Theory And Practice Bn. Dutta. UBS Publishers' Distributors, 1991.
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