APA (7th ed.) Citation

Smart, R. C. (1930). The economics of the coal industry / by R.C. Smart. King.

Chicago Style (17th ed.) Citation

Smart, R. C. The Economics of the Coal Industry / by R.C. Smart. King, 1930.

MLA (9th ed.) Citation

Smart, R. C. The Economics of the Coal Industry / by R.C. Smart. King, 1930.

Warning: These citations may not always be 100% accurate.