Walachia, Servia, Bulgaria, and Romania, Map of the region of Wallachia, Serfis, Bulgaria, Rumelia, Fig. 118, p. 551, Gerhard Mercator, Jodocus Hondius, Jansson: Atlas minor Gerardi Mercatoris. Amsterodami: ex officina Ioannis Ianssonii, MDCXXXIIII [1634].
Walachia, Servia, Bulgaria, and Romania, Map of the region of Wallachia, Serfis, Bulgaria, Rumelia, Fig. 118, p. 551, Gerhard Mercator, Jodocus Hondius, Jansson: Atlas minor Gerardi Mercatoris. Amsterodami: ex officina Ioannis Ianssonii, MDCXXXIIII [1634]