APA (7th ed.) Citation

Collaboration, L., Aaij, R., Beteta, C., Adametz, A., Adeva, B., Adinolfi, M., . . . Artuso, M. (2012). First observation of the decay $B^{+} \rightarrow π^{+} μ^{+} μ^{-}$.

Chicago Style (17th ed.) Citation

Collaboration, L., et al. First Observation of the Decay $B^{+} \rightarrow π^{+} μ^{+} μ^{-}$. 2012.

MLA (9th ed.) Citation

Collaboration, L., et al. First Observation of the Decay $B^{+} \rightarrow π^{+} μ^{+} μ^{-}$. 2012.

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