Perspectives on helping relationships and the helping professionsDonald L. Avila, Arthur W. Combs · First published 1985Open the Tome
Helping RelationshipArthur W Combs, Donald L Avila, William W Purkey · First published 1978Open the Tome
Helping relationshipsArthur W. Combs, Donald L. Avila, William W. Purkey · First published 1976Open the Tome
The Helping Relationship SourcebookWilliam W., and Avila, Donald L., and Combs, Arthur W. Purkey · First published 1975Open the Tome
