TY  - RPRT
TI  - On the development of procedural knowledge.
AU  - D B Willingham
AU  - M J Nissen
AU  - P Bullemer
PY  - 1989
DO  - 10.1037//0278-7393.15.6.1047
UR  - https://pubmed.ncbi.nlm.nih.gov/2530305/
ID  - 2530305
ER  -