Παραπομπή APA

Jacobs, J. A. (1963). Earth's core and geomagnetism. Pergamon press.

Παραπομπή Chicago Style

Jacobs, J. A. Earth's Core and Geomagnetism. London: Pergamon press, 1963.

Παραπομπή MLA

Jacobs, J. A. Earth's Core and Geomagnetism. Pergamon press, 1963.