Gaya APA
Socio-economic conditions and developments Kali Konto Upperwatershed
.
(1986).
Malang:
Proyek Kali Konto.
Gaya MLA
Socio-economic conditions and developments Kali Konto Upperwatershed
.
.
Malang:
Proyek Kali Konto,
1986.
Buku.