Gaya APA
Polit-O\'Hara, ., Denise, . (1997).
Essentials Of Nursing Research Methods, Appraisal, And Utilization (4).
Philadelophia:
Lippincott.
Gaya MLA
Polit-O\'Hara, ., Denise, .
"Essentials Of Nursing Research Methods, Appraisal, And Utilization".
4
Philadelophia:
Lippincott,
1997.
.