Gaya APA

Hartmann, D, E. (1918). Geological Report on the Coal-Occurrence In the Mining Concessions "Soekamarinda" And "Boenian" And the Coalfield "Ajer Serillo", Residency Palembang, . : .

Gaya MLA

Hartmann, Dr., E.. "Geological Report on the Coal-Occurrence In the Mining Concessions "Soekamarinda" And "Boenian" And the Coalfield "Ajer Serillo", Residency Palembang,". : , 1918. Text.