TY  - RPRT
TI  - Methodological triangulation: a vehicle for merging quantitative and qualitative research methods.
AU  - M E Duffy
PY  - 1987
DO  - 10.1111/j.1547-5069.1987.tb00609.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3666768/
ID  - 3666768
ER  -