Nancy burns, susan K. Grove, “Understanding nursing research”, II edition Saunders company, New Delhi, (2002) Page No: 418-450.
Suresh K. Sharma, “Nursing Research and statistics, II edition Elsevier, India privete limited, New Delhi, (2014) Page No: 29-33.
Kate Gerrish and Anne lacey, “The Research process in nursing “5th Edition Blackwell publishing, (2006), Page No:491-519.
Denise F. Polit, and Cheryl tatano beck, Nursing Research generating and assessing Evidence for Nursing practice, 8th Edition, (2008), Lippincott, williams and wilkins, London Page No:664-691.
Mckenna. H, et al., Barriers to evidence based practice in primary care, (2004), Journal of advanced Nursing, Page No: 178-179.
