Gaya APA
Polit, D, F., Beck, C, T. (2012).
Nursing Research: generating assessing evidence for nursing practice (9).
USA:
Wolters kluwer.
Gaya MLA
Polit, Denise, F.., Beck, Cheryl, Tatano.
"Nursing Research: generating assessing evidence for nursing practice".
9
USA:
Wolters kluwer,
2012.
Text.