Please use the first reference in the following list whenever using TR8:

Bocci G (2015). “TR8: an R package for easily retrieving plant species traits.” Methods in Ecology and Evolution, 6(3), 347–350. http://dx.doi.org/10.1111/2041-210X.12327.

As tr8 is continually evolving, you may want to cite its version number. Find it with 'help(package=TR8)'.

Corresponding BibTeX entry:

  @Article{,
    author = {Gionata Bocci},
    title = {TR8: an R package for easily retrieving plant species
      traits},
    journal = {Methods in Ecology and Evolution},
    year = {2015},
    volume = {6},
    number = {3},
    pages = {347--350},
    url = {http://dx.doi.org/10.1111/2041-210X.12327},
  }