Rosso Murillo, J. W. (2013). Underground coal gasification technology impact on coal reserves in Colombia. Universidad Pedagógica y Tecnológica de Colombia.
Lua i Stíl Chicago (17ú heag.)Rosso Murillo, John William. Underground Coal Gasification Technology Impact on Coal Reserves in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2013.
Lua MLA (9ú heag.)Rosso Murillo, John William. Underground Coal Gasification Technology Impact on Coal Reserves in Colombia. Universidad Pedagógica y Tecnológica de Colombia, 2013.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
