Coal Industry leaflets. No. 2, Efficiency in the mines. London : Published by Coal Industry Publications.
Chicago Style (17th ed.) CitationCoal Industry Leaflets. No. 2, Efficiency in the Mines. London : Published by Coal Industry Publications.
MLA (8th ed.) CitationCoal Industry Leaflets. No. 2, Efficiency in the Mines. London : Published by Coal Industry Publications.
Warning: These citations may not always be 100% accurate.