APA (7th ed.) Citation

Sumaruk, Y., & Reda, J. (2011). Secular variations of the geomagnetic field and solar activity.

Chicago Style (17th ed.) Citation

Sumaruk, Yu, and J. Reda. Secular Variations of the Geomagnetic Field and Solar Activity. 2011.

MLA (8th ed.) Citation

Sumaruk, Yu, and J. Reda. Secular Variations of the Geomagnetic Field and Solar Activity. 2011.

Warning: These citations may not always be 100% accurate.