7Nagda,B.A.,Gregerman,S.R.,Jonides,J.,von Hippel,W.,& Lerner,J.S."Undergraduate student-faculty research partnerships affect student retention.," The Review of Higher Education 22(1998):55-72.
8Baine B.Alexander,Julie Foertsch,Susan Daffinrudand Richard Tapia.,“The Spend a Summer with a Scientist (SaS) Program at Rice University:A Study of Program Outcomes and Essential Elements,”homepages.cae.wisc.edu/~lead/pages/products/sas-curq.pdf
9Foertsch,J.,Millar,SB,Squire,L.,& Gunter,R.,Evaluation of the UW-Madison's Summer Undergraduate Research Programs:Final Report.1997.homepages.cae.wisc.edu/~lead/pages/products/srop.pdf
10Carolyn Ash Merkel,"Undergraduate Research at Six Research Universities.,"www.aau.edu/education/Merkel.pdf