APA (7th ed.) Citation

Matzka, J., Stolle, C., Yamazaki, Y., Bronkalla, O., & Morschhauser, A. The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity. Wiley.

Chicago Style (17th ed.) Citation

Matzka, J., C. Stolle, Y. Yamazaki, O. Bronkalla, and A. Morschhauser. The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity. Wiley.

MLA (9th ed.) Citation

Matzka, J., et al. The Geomagnetic Kp Index and Derived Indices of Geomagnetic Activity. Wiley.