Gaya APA
Press, Frank. (1974).
EARTH .
United States:
W.H. FREEMAN AND COMPANY.
Gaya Chicago
Press, Frank.
EARTH.
United States:
W.H. FREEMAN AND COMPANY,
1974.
Text.
Gaya MLA
Press, Frank.
EARTH.
United States:
W.H. FREEMAN AND COMPANY,
1974.
Text.
Gaya Turabian
Press, Frank.
EARTH.
United States:
W.H. FREEMAN AND COMPANY,
1974.
Print.