APA (7th ed.) Citation

collaboration, L., Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., . . . Archilli, F. (2013). Observation of $B^0_s$-$\bar{B}^0_s$ mixing and measurement of mixing frequencies using semileptonic B decays.

Chicago Style (17th ed.) Citation

collaboration, L., et al. Observation of $B^0_s$-$\bar{B}^0_s$ Mixing and Measurement of Mixing Frequencies Using Semileptonic B Decays. 2013.

MLA (9th ed.) Citation

collaboration, L., et al. Observation of $B^0_s$-$\bar{B}^0_s$ Mixing and Measurement of Mixing Frequencies Using Semileptonic B Decays. 2013.

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