Press, F. (1982). Earth. W.H.Freeman.
Cita Chicago (17th ed.)Press, Frank. Earth. San Francisco: W.H.Freeman, 1982.
Cita MLA (9th ed.)Press, Frank. Earth. W.H.Freeman, 1982.
Atenció: Aquestes cites poden no estar 100% correctes.
Press, F. (1982). Earth. W.H.Freeman.
Cita Chicago (17th ed.)Press, Frank. Earth. San Francisco: W.H.Freeman, 1982.
Cita MLA (9th ed.)Press, Frank. Earth. W.H.Freeman, 1982.