Não informado. (1984). Coal Preparation. Gordon and Breach Science Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Coal Preparation. New York: Gordon and Breach Science Publishers, 1984.
Lua MLA (8ú heag.)Não informado. Coal Preparation. Gordon and Breach Science Publishers, 1984.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.