Cita APA (7a ed.)

Wilhjelm, J., & Friis-Christensen, E. (1972). Electric field and high-latitude zonal currents induced by mercging of field lines. Det Danske Meteorologiske Institut.

Cita Chicago Style (17a ed.)

Wilhjelm, J., y Eigil Friis-Christensen. Electric Field and High-latitude Zonal Currents Induced by Mercging of Field Lines. Charlottenlund: Det Danske Meteorologiske Institut, 1972.

Cita MLA (9a ed.)

Wilhjelm, J., y Eigil Friis-Christensen. Electric Field and High-latitude Zonal Currents Induced by Mercging of Field Lines. Det Danske Meteorologiske Institut, 1972.