Cita APA (7a ed.)

Press, F., & Siever, R. (1978). Earth (2nd. ed.). W. H. Freeman.

Cita Chicago Style (17a ed.)

Press, Frank, y Raymond Siever. Earth. 2nd. ed. San Francisco, Calif.: W. H. Freeman, 1978.

Cita MLA (8a ed.)

Press, Frank, y Raymond Siever. Earth. 2nd. ed. W. H. Freeman, 1978.