Gaya APA
W.Steffen, A Sanders. (2005).
Global Change and Earth System .
:
.
Gaya Chicago
W.Steffen, A Sanders.
Global Change and Earth System.
:
,
2005.
Buku.
Gaya MLA
W.Steffen, A Sanders.
Global Change and Earth System.
:
,
2005.
Buku.
Gaya Turabian
W.Steffen, A Sanders.
Global Change and Earth System.
:
,
2005.
Buku.