TY  - RPRT
TI  - Sustaining behavior with conditioned reinforcement as the only response-produced consequence.
AU  - J Zimmerman
AU  - P V Hanford
PY  - 1966
DO  - 10.2466/pr0.1966.19.2.391
UR  - https://pubmed.ncbi.nlm.nih.gov/5912799/
ID  - 5912799
ER  -