Gaya APA

Kingston, J. et al (1976). CONTRIBUTION TO THE PRE-BAONG STRATIGRAPHY OF NORTH SUMATRA-INDONESIA . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Kingston, J.. et al. "CONTRIBUTION TO THE PRE-BAONG STRATIGRAPHY OF NORTH SUMATRA-INDONESIA". Bandung: Pusat Sumber Daya Geologi, 1976. Geologi Tata Lingkungan.