Why group therapy works and how to do it : a guide for health and social care professionals Sandahl, Christer (et. al) - New York: Routledge, 2021. - xviii,197p. PB eng ISBN: 9780367439682 Subjects--Topical Terms: Group psychotherapy Social groupsLeadership Psychotherapy, Group Dewey Class. No.: 616.89152 / WHY