@book{305672,
	author = {Haas, Willem de, and Burggraaf, Delia,.},
	title = {Group therapy and group dynamic theory :},
	publisher = {Routledge,},
	year = {2025.},
	address = {New York, NY :},
	note = {"First published in Dutch as Groepsbehandeling en Teambegeleiding in de Zorg by Boom Uitgevers, 2020"--Title page verso.}
}