7Alan Bailin, Ann Grafstein. The linguistic assumptions un- derlying readability formulae: a critique. Language & Communication, (212001).
8Gunning,T. G. The Role of Readability in Today: Classroom. Topics in language disorders 23 (3) ,2003.
9The Lexile Framework for Reading. Popular Measurement, ( spring1998 ).
10Benjamin D. Wright, A. Jackson Stenner. Readability and Reading Ability. Paper presented to the Australian council on Education Research, June, 1998:6.