Freza-Olczyk, M. (2018). 
	Bishop Conrad III of Kamień Pomorski: a common clergyman and a politician in the Duchy of Pomerania in 1233–1241. Studia z Dziejów Średniowiecza, 2018, 67-81. doi: https://doi.org/10.4467/25442562SDS.18.005.9807