Konopka, Gisela. Social group work a helping process. - Englewood Cliffs, N.J. Prentice-Hall 1963. - 307 p. 24 cm. - Prentice-Hall sociology series . Includes bibliography. LCCN: 63010940 /L Subjects--Topical Terms: Social group work LC Class. No.: HV45 / .K63 Dewey Class. No.: 361.4