APA
(1997). Tata tech. Calcutta: Tata Iron and Steel Company Limited.
Chicago
1997. Tata tech. Calcutta: Tata Iron and Steel Company Limited.
Harvard
(1997). Tata tech. Calcutta: Tata Iron and Steel Company Limited.
MLA
Tata tech. Calcutta: Tata Iron and Steel Company Limited. 1997.