Tofts, R.J. (2004), "Biological flora of the British isles No. 234 Geranium robertianum L.", Journal of Ecology, 92: 537–555, doi:10.1111/j.0022-0477.2004.00892.x
nrm.se
linnaeus.nrm.se
Anderberg, Arne, "Geranium robertianum L.", Den Virtuella Floran, Naturhistoriska riksmuseet, Stockholm, Sweden