Gaya APA
The Indonesian Jounal of Geography Vol.23-25 No.64-66 Decsember 1992-1993. ().
Yogyakarta, Indonesia:
Gadjah Mada University.
Gaya MLA
The Indonesian Jounal of Geography Vol.23-25 No.64-66 Decsember 1992-1993.
.
Yogyakarta, Indonesia:
Gadjah Mada University,
.
.