Jeffreys, H. (1960). Pollock Memorial Lecture. The structure of the Earth. Zenodo.
Cita Chicago (17th ed.)Jeffreys, Harold. Pollock Memorial Lecture. The Structure of the Earth. Zenodo, 1960.
Cita MLA (9th ed.)Jeffreys, Harold. Pollock Memorial Lecture. The Structure of the Earth. Zenodo, 1960.
Atenció: Aquestes cites poden no estar 100% correctes.