APA (7th ed.) Citation

Newitt, L. R., Chulliat, A., & Orgeval, J. -. (2009). Location of the North Magnetic Pole in April 2007. Earth, Planets and Space, 61(6), 703.

Chicago Style (17th ed.) Citation

Newitt, L. R., A. Chulliat, and J. -J Orgeval. "Location of the North Magnetic Pole in April 2007." Earth, Planets and Space 61, no. 6 (2009): 703.

MLA (8th ed.) Citation

Newitt, L. R., et al. "Location of the North Magnetic Pole in April 2007." Earth, Planets and Space, vol. 61, no. 6, 2009, p. 703.