APA (7th ed.) Citation

Uusitalo, J., Arppe, L., Hackman, T., Helama, S., Kovaltsov, G., Mielikäinen, K., . . . Oinonen, M. (2018). Solar superstorm of AD 774 recorded subannually by Arctic tree rings. Nature Communications, 9(1), .

Chicago Style (17th ed.) Citation

Uusitalo, J., et al. "Solar Superstorm of AD 774 Recorded Subannually by Arctic Tree Rings." Nature Communications 9, no. 1 (2018).

MLA (9th ed.) Citation

Uusitalo, J., et al. "Solar Superstorm of AD 774 Recorded Subannually by Arctic Tree Rings." Nature Communications, vol. 9, no. 1, 2018.