Gaya APA
Shae-Albin, V, R. (1993).
Geological Features That Caontribute To Ground Control Problems In Underground Coal Mines .
Bandung:
Pusat Sumber Daya Geologi.
Gaya MLA
Shae-Albin, Valois, R..
"Geological Features That Caontribute To Ground Control Problems In Underground Coal Mines".
Bandung:
Pusat Sumber Daya Geologi,
1993.
Batubara.