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.
Цитирование в стиле Чикаго (17-е изд.)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.
Цитирование MLA (9-е изд.)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.
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