Gaya APA

Mannhardt, F, G, M, E. (1918). Report on the Results of the Geological And Mining Survey of the Tandjoeng Coalfields . : MINE BUREAU.

Gaya MLA

Mannhardt, F., G., M., E.. "Report on the Results of the Geological And Mining Survey of the Tandjoeng Coalfields". : MINE BUREAU, 1918. Text.