To cite the stockR package in publications please use the following.

  Foster, S. D.; Feutry, P.; Grewe, P. M.; Berry, O.; Hui, F. K. C. &
  Davies, C. R. Reliably discriminating stock structure with genetic
  markers: Mixture models with robust and fast computation Molecular
  Ecology Resources, 2018, 18, 1310-1325

A BibTeX entry for LaTeX users is

  @Article{,
    title = {Reliably discriminating stock structure with genetic markers: Mixture models with robust and fast computation},
    author = {{S.D. Foster} and {P. Feutry} and {P.M. Grewe} and {O. Berry} and {F.K.C. Berry} and {C.R. Davies}},
    year = {2018},
    journal = {Molecular Ecology Resources},
    volume = {18},
    pages = {1310-1325},
  }