Press, F. (1998). Earth. W. H. Freeman.
Chicago Style (17th ed.) ZitazioaPress, Frank. Earth. New York: W. H. Freeman, 1998.
MLA (9th ed.) ZitazioaPress, Frank. Earth. W. H. Freeman, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
Press, F. (1998). Earth. W. H. Freeman.
Chicago Style (17th ed.) ZitazioaPress, Frank. Earth. New York: W. H. Freeman, 1998.
MLA (9th ed.) ZitazioaPress, Frank. Earth. W. H. Freeman, 1998.