Lua APA (7ú heag.)
Patra, K. K., & Bhattacharjee, D. (2013). Engineering economics and costing. S. Chand & Company.
Lua i Stíl Chicago (17ú heag.)
Patra, K. K., agus Dhiraj Bhattacharjee. Engineering Economics and Costing. New Delhi: S. Chand & Company, 2013.
Lua MLA (9ú heag.)
Patra, K. K., agus Dhiraj Bhattacharjee. Engineering Economics and Costing. S. Chand & Company, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.