Gaya APA
Nugroho, A. (2015).
Indonesian Mining Journal Volume 18 Number 2, June 2015 .
Bandung:
R&D Centre for Mineral and Coal Technologi.
Gaya MLA
Nugroho, Agus.
"Indonesian Mining Journal Volume 18 Number 2, June 2015".
Bandung:
R&D Centre for Mineral and Coal Technologi,
2015.
Text.