Polit, D., & Beck, C. T. (2004). Essentials of Nursing Research: Methods, Appraisal, and Utilization. Lippicott Williams & Willkins.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPolit, Dennise, और Cheryl Tatano Beck. Essentials of Nursing Research: Methods, Appraisal, and Utilization. Lippicott Williams & Willkins, 2004.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPolit, Dennise, और Cheryl Tatano Beck. Essentials of Nursing Research: Methods, Appraisal, and Utilization. Lippicott Williams & Willkins, 2004.
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