(1970). History of the earth's magnetic field [by] David W. Strangway.
Cita Chicago (17th ed.)History of the Earth's Magnetic Field [by] David W. Strangway. 1970.
Cita MLA (9th ed.)History of the Earth's Magnetic Field [by] David W. Strangway. 1970.
Atenció: Aquestes cites poden no estar 100% correctes.