Gaya APA

Centre, M, T, D. et al (1978). Geological Study Of The Coal Reserves And Quality Of Bukit Asam Coal Mines : Lampiran Peta . : .

Gaya MLA

Centre, Mineral, Technology, Development. et al. "Geological Study Of The Coal Reserves And Quality Of Bukit Asam Coal Mines : Lampiran Peta". : , 1978. Text.