Fuginski, Z. (2021). Underground coal minig - global picture and brief overview.
Lua i Stíl Chicago (17ú heag.)Fuginski, Zygmunt. Underground Coal Minig - Global Picture and Brief Overview. 2021.
Lua MLA (9ú heag.)Fuginski, Zygmunt. Underground Coal Minig - Global Picture and Brief Overview. 2021.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
