APA (7th ed.) Citation

Jacobs, J. A. (1987). The earth's core (2nd ed.). Academic Press.

Chicago Style (17th ed.) Citation

Jacobs, J. A. The Earth's Core. 2nd ed. London: Academic Press, 1987.

MLA (9th ed.) Citation

Jacobs, J. A. The Earth's Core. 2nd ed. Academic Press, 1987.