Cita APA (7th ed.)

Ernst, W. G. (2000). Earth systems: Processes and issues. Cambridge University Press.

Cita Chicago (17th ed.)

Ernst, W. G. Earth Systems: Processes and Issues. Cambridge, [Eng.]: Cambridge University Press, 2000.

Cita MLA (9th ed.)

Ernst, W. G. Earth Systems: Processes and Issues. Cambridge University Press, 2000.