APA Style
Sager, Robert J [et.al]. (1992).
World Geography Today (Revisi).
USA:
Holt, Rinehart and Winston.
Chicago Style
Sager, Robert J [et.al].
World Geography Today.
Revisi
USA:
Holt, Rinehart and Winston,
1992.
Buku.
MLA Style
Sager, Robert J [et.al].
World Geography Today.
Revisi
USA:
Holt, Rinehart and Winston,
1992.
Buku.
Turabian Style
Sager, Robert J [et.al].
World Geography Today.
Revisi
USA:
Holt, Rinehart and Winston,
1992.
Buku.