Tabula Frisiæ Orientalis : olim Ubbonis Emmii deinde Sansonis et Allardi studio nota
cum variis autographis denuo collata, aucta innumerisque in locis emendata / ab Ehrenreichio
Gerhardo Coldewey, 1730.
https://en.wikipedia.org/wiki/Abraham_Allard, 2017-05-29