APA (7th ed.) Citation

Gonçalves, R., Pinto, A. A., & Stollenwerk, N. (2009). Cycles and universality in sunspot number fluctuations.

Chicago Style (17th ed.) Citation

Gonçalves, R., A. A. Pinto, and N. Stollenwerk. Cycles and Universality in Sunspot Number Fluctuations. 2009.

MLA (8th ed.) Citation

Gonçalves, R., et al. Cycles and Universality in Sunspot Number Fluctuations. 2009.