Bhattacharya, P. S. (2018). When coal turned gold. Penguin Random house.
Chicago-čujuhus (17. p.)Bhattacharya, Partha Sarathi. When Coal Turned Gold. Gurgaon: Penguin Random house, 2018.
MLA-čujuhus (9. p.)Bhattacharya, Partha Sarathi. When Coal Turned Gold. Penguin Random house, 2018.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.