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Gaya APA
Ilmu Bumi Alam. (1975).
bandung:
Penerbit Masa Baru.
Gaya Chicago
Ilmu Bumi Alam.
.
bandung:
Penerbit Masa Baru,
1975.
Text.
Gaya MLA
Ilmu Bumi Alam.
.
bandung:
Penerbit Masa Baru,
1975.
Text.
Gaya Turabian
Ilmu Bumi Alam.
bandung:
Penerbit Masa Baru,
1975.
Print.