APA Style

Polit, D., Beck, C, T. (2004). Essentials of Nursing Research : Methods, Appraisal, and Utilization (ed. 6). Philadelphia: Lippicott Williams & Willkins.

MLA Style

Polit, Dennise., Beck, Cheryl, Tatano. "Essentials of Nursing Research : Methods, Appraisal, and Utilization". ed. 6 Philadelphia: Lippicott Williams & Willkins, 2004. Text.