Coal, I. C. o. E. i. t. P. o. (1979). Spotlight on coal: Report of the Committee on Economies in the Production of Coal, Govt. of India. India Book Exchange.
Chicago-Zitierstil (17. Ausg.)Coal, India. Committee on Economies in the Production of. Spotlight on Coal: Report of the Committee on Economies in the Production of Coal, Govt. of India. India Book Exchange, 1979.
MLA-Zitierstil (9. Ausg.)Coal, India. Committee on Economies in the Production of. Spotlight on Coal: Report of the Committee on Economies in the Production of Coal, Govt. of India. India Book Exchange, 1979.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.