Gaya APA
The Indonesian Journal of Geography Vol. 6 No.10-31 June 1976
.
().
Yogyakarta, Indonesia:
Gadjah Mada University.
Gaya MLA
The Indonesian Journal of Geography Vol. 6 No.10-31 June 1976
.
.
Yogyakarta, Indonesia:
Gadjah Mada University,
.
.