Chapman, S. (1957). The lunar and solar daily variations of the horizontal geomagnetic vector at Greenwich: 1848 - 1913 ; with an appendix on the lunar daily variation of magnetic declination at Pavlovsk and Sitka. Vandenhoeck & Ruprecht.
Chicago-Zitierstil (17. Ausg.)Chapman, Sydney. The Lunar and Solar Daily Variations of the Horizontal Geomagnetic Vector at Greenwich: 1848 - 1913 ; with an Appendix on the Lunar Daily Variation of Magnetic Declination at Pavlovsk and Sitka. Göttingen: Vandenhoeck & Ruprecht, 1957.
MLA-Zitierstil (9. Ausg.)Chapman, Sydney. The Lunar and Solar Daily Variations of the Horizontal Geomagnetic Vector at Greenwich: 1848 - 1913 ; with an Appendix on the Lunar Daily Variation of Magnetic Declination at Pavlovsk and Sitka. Vandenhoeck & Ruprecht, 1957.