James, R. (1946). Coal: Report on overseas investigations into methods of working thick coal seams, solid stowage, mechanization, practices generally in coal mines, oil from coal and amenities for miners. Govt. Printer.
Cytowanie według stylu Chicago (wyd. 17)James, Rowland. Coal: Report on Overseas Investigations into Methods of Working Thick Coal Seams, Solid Stowage, Mechanization, Practices Generally in Coal Mines, Oil from Coal and Amenities for Miners. Canberra: Govt. Printer, 1946.
Cytowanie według stylu MLA (wyd. 8)James, Rowland. Coal: Report on Overseas Investigations into Methods of Working Thick Coal Seams, Solid Stowage, Mechanization, Practices Generally in Coal Mines, Oil from Coal and Amenities for Miners. Govt. Printer, 1946.
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