Gaya APA
Plumer,Charles.C. (2007).
Physical Geology .
:
McGraw-Hill.
Gaya Chicago
Plumer,Charles.C.
Physical Geology.
:
McGraw-Hill,
2007.
Text.
Gaya MLA
Plumer,Charles.C.
Physical Geology.
:
McGraw-Hill,
2007.
Text.
Gaya Turabian
Plumer,Charles.C.
Physical Geology.
:
McGraw-Hill,
2007.
Print.