Polit and Hungler (1999) define population as the totality of all subjects that conform to a set of specifications, compromising the entire group of persons that is of interest to the researcher and to whom the research results can be generalized.References
Polit, D.F. & Hungler, B.P. (1999). Nursing research: principles and methods. 6th Ed. [Online]. Philadelphia: J.B. Lippincott. Available from: https://books.google.co.in/books/about/Nursing_Research.html?id=CDRtAAAAMAAJ.