Gaya APA

Lerche, D. et al (1974). Sumatra Regional Planning Study Province South Sumatra Infrastructure . Bandung: Pusat Sumber Daya Geologi.

Gaya MLA

Lerche, Dietrich. et al. "Sumatra Regional Planning Study Province South Sumatra Infrastructure". Bandung: Pusat Sumber Daya Geologi, 1974. Bukan Logam.