Franklin

MLA

Backman, Jules. Bituminous Coal Wages, Profits, and Productivity: Prepared for Southern Coal Producers Association; Presented Before Presidential Coal Board. [N. p.], 1950.

APA

Backman, J. (1950). Bituminous coal wages, profits, and productivity: Prepared for Southern Coal Producers Association; presented before Presidential Coal Board. [N. p.].

Chicago

Backman, Jules, Bituminous Coal Wages, Profits, and Productivity: Prepared for Southern Coal Producers Association; Presented before Presidential Coal Board. [N. p.], 1950.