APA (7th ed.) Citation

Brehm, N., Pearson, C. L., Christl, M., Bayliss, A., Nicolussi, K., Pichler, T., . . . Wacker, L. Tracing ancient solar cycles with tree rings and radiocarbon in the first millennium BCE. Nature Portfolio.

Chicago Style (17th ed.) Citation

Brehm, Nicolas, Charlotte L. Pearson, Marcus Christl, Alex Bayliss, Kurt Nicolussi, Thomas Pichler, David Brown, and Lukas Wacker. Tracing Ancient Solar Cycles with Tree Rings and Radiocarbon in the First Millennium BCE. Nature Portfolio.

MLA (9th ed.) Citation

Brehm, Nicolas, et al. Tracing Ancient Solar Cycles with Tree Rings and Radiocarbon in the First Millennium BCE. Nature Portfolio.