Gaya APA

Sigit, S. (1963). Progress of Geological Survey and Related Activities in Indonesia in 1960 - 1962 . Bandung: Departemen Perindustrian Dasar/Pertambangan Direktorat Geologi.

Gaya MLA

Sigit, Soetarjo. "Progress of Geological Survey and Related Activities in Indonesia in 1960 - 1962". Bandung: Departemen Perindustrian Dasar/Pertambangan Direktorat Geologi, 1963. Text.