(1959). Description of the earth's main magnetic field and its secular change: 1905-1945 (3. print.).
Chicago Style (17th ed.) CitationDescription of the Earth's Main Magnetic Field and Its Secular Change: 1905-1945. 3. print. Washington, DC, 1959.
MLA (9th ed.) CitationDescription of the Earth's Main Magnetic Field and Its Secular Change: 1905-1945. 3. print. 1959.
Warning: These citations may not always be 100% accurate.