SINGH, G. (1993). A textbook of estimating costing and valuation. Standard Publishers.
Lua i Stíl Chicago (17ú heag.)SINGH, Gurcharan. A Textbook of Estimating Costing and Valuation. Standard Publishers, 1993.
Lua MLA (9ú heag.)SINGH, Gurcharan. A Textbook of Estimating Costing and Valuation. Standard Publishers, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.