B H E L. (1999). TRANSFORMERS BHARAT HEAVY ELECTRICAL LIMITED. TATA MC GRAW HILL.
Chicago-čujuhus (17. p.)B H E L. TRANSFORMERS BHARAT HEAVY ELECTRICAL LIMITED. TATA MC GRAW HILL, 1999.
MLA-čujuhus (9. p.)B H E L. TRANSFORMERS BHARAT HEAVY ELECTRICAL LIMITED. TATA MC GRAW HILL, 1999.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.