Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (8a ed.)

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