Cita APA (7a ed.)

Jeffreys, H. (1929). The Earth: : Its origin, history and physical constitution. Cambridge University Press.

Cita Chicago Style (17a ed.)

Jeffreys, Harold. The Earth: : Its Origin, History and Physical Constitution. Cambridge: Cambridge University Press, 1929.

Cita MLA (9a ed.)

Jeffreys, Harold. The Earth: : Its Origin, History and Physical Constitution. Cambridge University Press, 1929.