8Keith Topping.Tutoring[M/OL].the International Academy of Education.Geneva.Switzerland.2000.pp.3.http://www.ibe.unesco.org.
9Gaty W.Ritter.Joshua H.Barnett.George S.Denny.and Ginger R.Albin.The Effectiveness of Volunteer Tutoring Programs for Elementary and Middle School Students:A Meta-Analysis[J].Review of Educational Research.vol.79,2009(01):3-38.
10Elbaum.B.,Vanghn.S.,Hughes.M T.,& Moody,S.W.How effective are one-to-one tutoring programs in reading for dementarvy students at risk for reading failure? A meta-analysis of the intervention research[J].Journal of Educational Psychology,2000(92):605-619.