Gaya APA
Petersen, Morris S., Rigby, J. Keith. (1984).
Interpreting earth history : a manual in historical geology .
America:
WM.C. Brown Company Publishers.
Gaya Chicago
Petersen, Morris S., Rigby, J. Keith.
Interpreting earth history : a manual in historical geology.
America:
WM.C. Brown Company Publishers,
1984.
Text.
Gaya MLA
Petersen, Morris S., Rigby, J. Keith.
Interpreting earth history : a manual in historical geology.
America:
WM.C. Brown Company Publishers,
1984.
Text.
Gaya Turabian
Petersen, Morris S., Rigby, J. Keith.
Interpreting earth history : a manual in historical geology.
America:
WM.C. Brown Company Publishers,
1984.
Print.