TY  - RPRT
TI  - Procedures for giving immediate reinforcement in programmed instruction.
AU  - R E SCHUTZ
AU  - R G WHITTEMORE
PY  - 1962
DO  - 10.1901/jeab.1962.5-541
UR  - https://pubmed.ncbi.nlm.nih.gov/13987324/
ID  - 13987324
ER  -