Al Khuli، M. A. (1988). The measurement of bilingualism and its employment in teaching second languages. اللسان العربي، ع31 ، 49. مسترجع من http://search.mandumah.com/Record/655511
Al Khuli، Muhammad Ali. "The Measurement of Bilingualism and Its Employment in Teaching Second Languages." اللسان العربي ع31 (1988): 49. مسترجع من http://search.mandumah.com/Record/655511