Cita APA (7a ed.)

Hansen, H. (1983). The geomagnetic elements in Denmark 1928-80. Det Danske Meteorologiske Institut.

Cita Chicago Style (17a ed.)

Hansen, H.A. The Geomagnetic Elements in Denmark 1928-80. Kobenhavn: Det Danske Meteorologiske Institut, 1983.

Cita MLA (9a ed.)

Hansen, H.A. The Geomagnetic Elements in Denmark 1928-80. Det Danske Meteorologiske Institut, 1983.