Takács Louis, International Federation of Library Associations . IFLA Publications. Berlin, Boston: De Gruyter Saur, n.d.. Web. Retrieved 25 May. 2013, from http://www.degruyter.com/view/serial/36312

Takács L. International Federation of Library Associations (n.d.). IFLA Publications. Berlin, Boston: De Gruyter Saur. Retrieved 25 May. 2013, from http://www.degruyter.com/view/serial/36312

Takács Louis, International Federation of Library Associations . n.d. IFLA Publications. Berlin, Boston: De Gruyter Saur. Retrieved 25 May. 2013, from http://www.degruyter.com/view/serial/36312