TY  - RPRT
TI  - Marking multiple-choice questions.
AU  - A E Davis
AU  - G M Preston
PY  - 1969
DO  - 10.1016/s0140-6736(69)91623-7
UR  - https://pubmed.ncbi.nlm.nih.gov/4179599/
ID  - 4179599
ER  -