Gaya APA

Polit, D, F., Beck, C, T. (2018). Essentials of Nursing Research : Appraising Evidence for Nursing Practice (9). Philadelphia: Wolters Kluwer Health.

Gaya MLA

Polit, Denise, F.., Beck, Cheryl, Tatano. "Essentials of Nursing Research : Appraising Evidence for Nursing Practice". 9 Philadelphia: Wolters Kluwer Health, 2018. Electronic Resource.