APA Style

Junghans, K, H., Kotter, H. (1977). Regional development in Central and Southern Sumatra Volume I: Methodology . Sumatera Selatan: Dokumentasi Ilmiah Nasional Lipi.

MLA Style

Junghans, K., H.., Kotter, H.. "Regional development in Central and Southern Sumatra Volume I: Methodology". Sumatera Selatan: Dokumentasi Ilmiah Nasional Lipi, 1977. Buku.