APA (7th ed.) Citation

Sumaruk, Y. P., & Sumaruk, T. P. (2013). Dynamics of secular variations of geomagnetic field over the earth's polar caps.

Chicago Style (17th ed.) Citation

Sumaruk, Yu. P., and T. P. Sumaruk. Dynamics of Secular Variations of Geomagnetic Field over the Earth's Polar Caps. 2013.

MLA (8th ed.) Citation

Sumaruk, Yu. P., and T. P. Sumaruk. Dynamics of Secular Variations of Geomagnetic Field over the Earth's Polar Caps. 2013.

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