TY  - RPRT
TI  - Approaches to nursing science methods.
AU  - S R Gortner
AU  - P R Schultz
PY  - 1988
DO  - 10.1111/j.1547-5069.1988.tb00023.x
UR  - https://pubmed.ncbi.nlm.nih.gov/3350555/
ID  - 3350555
ER  -