TY  - BOOK
AU  - Polit, D F
AU  - Beck, C T
TI  - Essentials of nursing research : appraising evidence for nursing practice
SN  - 9781609130046
PY  - 2010///
CY  - Philadelphia, Pa.
PB  - Lippincott Williams & Wilkins
KW  - Research Methods
ER  -