Gaya APA

Energi, S, C, I, :, D, P. (1974). Pemali-Comal feasibility study project ; Pre feasibility study vol. I Main report . : DPE.

Gaya MLA

Energi, SANYU, Consultant, Inc., :, DEPARTEMEN, Pertambangan. "Pemali-Comal feasibility study project ; Pre feasibility study vol. I Main report". : DPE, 1974. Laporan.