Gaya APA

Sumarso, ., Ismoyowati, T. (1975). Contribution to the stratigraphy of the jiwo hills and their southern surroundings (Central Java) . Jakarta: Lembaga Minyak Dan Gas Bumi (Lemigas).

Gaya MLA

Sumarso, ., Ismoyowati, Tutty. "Contribution to the stratigraphy of the jiwo hills and their southern surroundings (Central Java)". Jakarta: Lembaga Minyak Dan Gas Bumi (Lemigas), 1975. Bukan Logam.