To cite SIBER in publications use:

Andrew L Jackson, Andrew C Parnell, Richard Inger and Stuart Bearhop (2011). Comparing isotopic niche widths among and within communities: SIBER - Stable Isotope Bayesian Ellipses in R Journal of Animal Ecology, 80, 595-602. URL http://dx.doi.org/10.1111/j.1365-2656.2011.01806.x.

Corresponding BibTeX entry:

  @Article{,
    title = {Comparing isotopic niche widths among and within
      communities: SIBER – Stable Isotope Bayesian Ellipses in R},
    author = {Andrew L Jackson and Andrew C Parnell and Richard Inger
      and Stuart Bearhop},
    journal = {Journal of Animal Ecology},
    year = {2011},
    number = {3},
    pages = {595--602},
    url = {http://dx.doi.org/10.1111/j.1365-2656.2011.01806.x},
  }