TY  - RPRT
TI  - The Child Language Data Exchange System: an update.
AU  - B MacWhinney
AU  - C Snow
PY  - 1990
DO  - 10.1017/s0305000900013866
UR  - https://pubmed.ncbi.nlm.nih.gov/2380278/
ID  - 2380278
ER  -