Dyfyniad APA
Patra, K. K., & Bhattacharjee, D. (2013). Engineering economics and costing. S. Chand & Company.
Dyfyniad Arddull Chicago
Patra, K. K., and Dhiraj Bhattacharjee. Engineering Economics and Costing. New Delhi: S. Chand & Company, 2013.
Dyfyniad MLA
Patra, K. K., and Dhiraj Bhattacharjee. Engineering Economics and Costing. S. Chand & Company, 2013.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.