Plazas Díaz, F. A. (2016). Analysis of the evolution of foreign direct investment in the coal mining sector in Colombia from 2002 to 2013. Universidad Pedagógica y Tecnológica de Colombia.
Lua i Stíl Chicago (17ú heag.)Plazas Díaz, Fabián Alfredo. Analysis of the Evolution of Foreign Direct Investment in the Coal Mining Sector in Colombia from 2002 to 2013. Universidad Pedagógica y Tecnológica de Colombia, 2016.
Lua MLA (9ú heag.)Plazas Díaz, Fabián Alfredo. Analysis of the Evolution of Foreign Direct Investment in the Coal Mining Sector in Colombia from 2002 to 2013. Universidad Pedagógica y Tecnológica de Colombia, 2016.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
