Güntert, StefanWehner, Theo2015-10-142015-10-1420150191-88691873-354910.1016/j.paid.2015.01.017http://hdl.handle.net/11654/10592en330 - WirtschaftThe impact of self-determined motivation on volunteer role identities: A cross-lagged panel study01A - Beitrag in wissenschaftlicher Zeitschrift14-18