APA (7th ed.) Citation

Sumaruk, Y. (2010). Secular variations at Ukrainian magnetic observatories. Геофизический журнал.

Chicago Style (17th ed.) Citation

Sumaruk, Yu. "Secular Variations at Ukrainian Magnetic Observatories." Геофизический журнал 2010.

MLA (8th ed.) Citation

Sumaruk, Yu. "Secular Variations at Ukrainian Magnetic Observatories." Геофизический журнал, 2010.

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