4Thomas, F.H (1982). The Genesis of Children's services in the American Public Library: 1875-1906 [ D ].USA: U- niversity of Wisconsin-Madision, 1982.
5Kate McDowell.Guiding Children's Reading: Surveys of Youth Service Methods and Emerging Professional Spe- cialization Before 1990) [EB/OL]. [2014-09-11 ].http:// www.katemcdowell.com/mcdowell-guiding-childrens-rea ding.pdf.
6Christine A. Jenkins. The History of Youth Services Li- brarianship:A Review of the Research Literature [J/OL]. [ 2011-06-16 ] .http://www.gslis.utexas.edu/-landc/fulhext /LandC_35_1_jenkins.pdf.
7Guidelines for Library Services to Babies and Toddlers [ EB/OL ]. [ 2011-06-17 ] .http://archive.ifla.org/VII/d3/pu b/Profrep 100.pdf.