TY  - RPRT
TI  - Verbalization, experimenter presence, and problem solving.
AU  - M H Carey
AU  - P N Foxman
AU  - D B Tarr
PY  - 1968
DO  - 10.1037/h0025519
UR  - https://pubmed.ncbi.nlm.nih.gov/5645237/
ID  - 5645237
ER  -