Dyfyniad APA

Birla Institute of Scientific Research. (1979). Whither Coal: A study of post-nationalisation coal industry. Vision Book.

Dyfyniad Arddull Chicago

Birla Institute of Scientific Research. Whither Coal: A Study of Post-nationalisation Coal Industry. New Delhi: Vision Book, 1979.

Dyfyniad MLA

Birla Institute of Scientific Research. Whither Coal: A Study of Post-nationalisation Coal Industry. Vision Book, 1979.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.