Gaya APA
The Indonesian Jounal of Geography Vol. 15-16 No. 49-51 June 1985-1986. ().
Yogyakarta, Indonesia:
Gadjah Mada University.
Gaya MLA
The Indonesian Jounal of Geography Vol. 15-16 No. 49-51 June 1985-1986.
.
Yogyakarta, Indonesia:
Gadjah Mada University,
.
.