Dakers, C. (1938). Notes on Scottish Coins: (1) Rex Scottorum Pennies of David II.; (2) Edinburgh Light Groats of Robert III.; (3) Some James II. Groats of the Third Variety of the Fleur-de-lis Groats; and (4) Gilbert Kirkwood’s Mark on a Gold Coin of James V. Proceedings of the Society of Antiquaries of Scotland, 72, 122-128. Retrieved from http://journals.socantscot.org/index.php/psas/article/view/8087