APA (7th ed.) Citation

Jacobs, J. A. (1994). Reversals of the Earth's magnetic field. Cambridge University Press.

Chicago Style (17th ed.) Citation

Jacobs, J. A. Reversals of the Earth's Magnetic Field. New York: Cambridge University Press, 1994.

MLA (9th ed.) Citation

Jacobs, J. A. Reversals of the Earth's Magnetic Field. Cambridge University Press, 1994.