Cita APA (7a ed.)

Friis-Christensen, E., & Wilhjelm, J. (1974). Polar CAP currents for different directions of the planetary magnetic field in the Y-Z plane. Det Danske Meteorologiske Institut.

Cita Chicago Style (17a ed.)

Friis-Christensen, Eigil, y J. Wilhjelm. Polar CAP Currents for Different Directions of the Planetary Magnetic Field in the Y-Z Plane. Kobenhavn: Det Danske Meteorologiske Institut, 1974.

Cita MLA (9a ed.)

Friis-Christensen, Eigil, y J. Wilhjelm. Polar CAP Currents for Different Directions of the Planetary Magnetic Field in the Y-Z Plane. Det Danske Meteorologiske Institut, 1974.