Poland's Ministerstwo Spraw Zagranicznych, Dzieje miast Rzeczypospolitej Polskiej: Polska w słowie i obrazach, 1928 [2]
James Minahan, One Europe, Many Nations: A Historical Dictionary of European National Groups, Greenwood Publishing Group, 2000, ISBN0-313-30984-1, p.376
Matthew Kuefler, The Boswell Thesis: Essays on Christianity, Social Tolerance, and Homosexuality, [3]
"History of the City Gdańsk"Archived 2012-10-17 at the Wayback Machine. "the governor of the castle, Bogusza, called on the Teutonic Knights for help. Those, having captured the castle in 1308 butchered the population. Since then the event is known as 'the Gdańsk slaughter'."
Natalia i Waldemar Borzestowscy, "Dlaczego zginął burmistrz" ("Why did the mayor die?"), [8]
uni-hamburg.de
www1.uni-hamburg.de
Nieß, Ulrich (1992). Hochmeister Karl von Trier (1311-1324). Stationen einer Karriere im Deutschen Orden. Quellen und Studien zur Geschichte des Deutschen Ordens. Vol. 47. p. 74.. For the Latin original and a contemporary copy see Jenks et al: Virtual PrUB 2.13 and the sources given by Nieß, p. 74, fn. 147, quote: "Novissime vero ad nostrum venit auditum, quod dicti preceptores et fratres hospitalis ejusdem dilecti filii nobisg) viri Wladislai Cracovie et Sandomirie ducis terram hostiliter subintrantes in civitate Gdansco ultra decem milia hominum gladio peremerunt infantibus vagientibus in cunis mortis exitium inferentes, quibus etiam hostis fidei pepercisset." Nieß translates this as follows: "Neuerdings aber gelangte zu unserer Kenntnis, daß die genannten Gebietiger und Brüder desselben Hospitals in das Land unseres (des edlen, ) geliebten Sohnes Wladyslaw, des Herzogs von Krakau und Sandomierz, feindlich eingedrungen sind und in der Stadt Danzig mehr als 10.000 Menschen mit dem Schwert getötet haben, dabei wimmernden Kindern in den Wiegen den Tod bringend, welche sogar der Feind des Glaubens geschont hätte."
web.archive.org
"History of the City Gdańsk"Archived 2012-10-17 at the Wayback Machine. "the governor of the castle, Bogusza, called on the Teutonic Knights for help. Those, having captured the castle in 1308 butchered the population. Since then the event is known as 'the Gdańsk slaughter'."