Polit, Denise F. Study Guide for Essentials of Nursing Research - Methods, Appraisal and Utilization Denise F. Polit, P.Hungler - 2nd edition - USA :Lippincott ,1989 - 145tr. ;24cm Subjects--Index Terms: Điều dưỡng Index Terms--Genre/Form: Sách tham khảo Dewey Class. No.: 610.73