Fuginski, Z. (2021). Underground coal minig - global picture and brief overview.
芝加哥风格引文Fuginski, Zygmunt. Underground Coal Minig - Global Picture and Brief Overview. 2021.
MLA引文Fuginski, Zygmunt. Underground Coal Minig - Global Picture and Brief Overview. 2021.
警告：这些引文格式不一定是100％准确.
