Gaya APA

Polit, D, F., Beck, H, T. (2012). Nursing Research : Generating and Assessing Evidence Nursing Practice (Ninth Edition). Philadelpia: Wolters Kluwer.

Gaya MLA

Polit, Denise, F.., Beck, Hery, Tatano. "Nursing Research : Generating and Assessing Evidence Nursing Practice". Ninth Edition Philadelpia: Wolters Kluwer, 2012. Text.