APA   Click to copy
Saramaki, J., Leicht, E. A., Lopez, E., Roberts, S. G. B., Reed-Tsochas, F., & Dunbar, R. I. M. (2014). Persistence of social signatures in human communication. Proceedings of the National Academy of Sciences, 111, 942–947. https://doi.org/10.1073/pnas.1308540110

Chicago/Turabian   Click to copy
Saramaki, J, EA Leicht, E Lopez, SGB Roberts, F Reed-Tsochas, and RIM Dunbar. “Persistence of Social Signatures in Human Communication.” Proceedings of the National Academy of Sciences 111 (January 21, 2014): 942–947.

MLA   Click to copy
Saramaki, J., et al. “Persistence of Social Signatures in Human Communication.” Proceedings of the National Academy of Sciences, vol. 111, National Academy of Sciences, Jan. 2014, pp. 942–47, doi:10.1073/pnas.1308540110.

@article{saramaki2014a,
  title = {Persistence of social signatures in human communication},
  year = {2014},
  month = jan,
  day = {21},
  journal = {Proceedings of the National Academy of Sciences},
  pages = {942--947},
  publisher = {National Academy of Sciences},
  volume = {111},
  doi = {10.1073/pnas.1308540110},
  author = {Saramaki, J and Leicht, EA and Lopez, E and Roberts, SGB and Reed-Tsochas, F and Dunbar, RIM},
  month_numeric = {1}
}