Gaya APA

Polit, D, F., Beck, C, T. (2012). NURSING RESEARCH : Generating and Assessing Evidence for Nusing Practice (Ed. 9). Philadelphia: Lippincott Williams & Wilkins.

Gaya MLA

Polit, Denice, F., Beck, Cheril, Tatano. "NURSING RESEARCH : Generating and Assessing Evidence for Nusing Practice". Ed. 9 Philadelphia: Lippincott Williams & Wilkins, 2012. Text.