Gaya APA

Harjanto, S. (1974). Geological progress report on the south prangat anticline Samarinda Quadrangle-East Kalimantan . Jakarta: For : Roy. Huffington Inc. Field Office Balikpapan-East Kalimantan-Indonesia.

Gaya MLA

Harjanto, Sarno. "Geological progress report on the south prangat anticline Samarinda Quadrangle-East Kalimantan". Jakarta: For : Roy. Huffington Inc. Field Office Balikpapan-East Kalimantan-Indonesia, 1974. Bukan Logam.