APA (7th ed.) Citation

(1980). Illumination in underground coal mines / Mine Safety and Health Administration, Department of Labor.

Chicago Style (17th ed.) Citation

Illumination in Underground Coal Mines / Mine Safety and Health Administration, Department of Labor. 1980.

MLA (9th ed.) Citation

Illumination in Underground Coal Mines / Mine Safety and Health Administration, Department of Labor. 1980.

Advarsel: Disse citationer er muligvist ikke 100% nøjagtige.