7Farrell,J. The necessity of comparison in the study of Endueation: the Salience of scienceandtheProblemofcomparalibity,J, comparativeEducationReview, 19 7 9.2 3 ( 1 ) 16.
8Val, D. Rust. Methodand methodology in comparative education[M]. Comparactive Educative Review Aug, 2003,47 : 3.