TY  - RPRT
TI  - The problem solving approach and therapeutic effectiveness.
AU  - B J Betz
PY  - 1966
DO  - 10.1176/appi.psychotherapy.1966.20.1.45
UR  - https://pubmed.ncbi.nlm.nih.gov/5906083/
ID  - 5906083
ER  -