d Tad Sperry (1994). "Business School Prestige: Research versus Teaching" (PDF). Energy & Environment. 18 (2): 13–43. 2010-06-20 දින මුල් පිටපත (PDF) වෙතින් සංරක්ෂණය කරන ලදී. සම්ප්‍රවේශය 2014-04-09.↑ ත්‍රිපිටකය, සූත්‍ර පිටකය↑ "The Origins of Science". Scientific American Frontiers.↑ 4.0 4.1 4.2 Unattributed. ""Research" in 'Dictionary' tab". Merriam Webster (m-w.com). Encyclopædia Britannica. සම්ප්‍රවේශය 13 August 2011.↑ Shuttleworth, Martyn (2008). "Definition of Research". Explorable. Explorable.com. සම්ප්‍රවේශය 14 August 2011.↑ Creswell, J. W. (2008). Educational Research: Planning, conducting, and evaluating quantitative and qualitative research (3rd ed.). Upper Saddle River: Pearson.↑ Trochim, W.M.K, (2006). Research Methods Knowledge Base.↑ Creswell, J.W. (2008). Educational research: Planning, conducting, and evaluating quantitative and qualitative research (3rd). Upper Saddle River, NJ: Prentice Hall. 2008 ISBN 0-13-613550-1 (pages 8-9)↑ Gauch, Jr., H.G. (2003).