Al Yusef، Y. A. A. Y.، و Vaziri، M. (2008). TEST FOR THE EXISTENCE OF CAUSALITY RELATIONSHIPS BETWEEN THE MARKET INDICES OF THE UNITED STATES AND THE GULF COOPERATION COUNCIL COUNTRIES (رسالة ماجستير غير منشورة). California State University, San Bernardino، سان برناردينو. مسترجع من http://search.mandumah.com/Record/619404
Al Yusef، Yusef Abd Allah Yusef، و M. Vaziri. "TEST FOR THE EXISTENCE OF CAUSALITY RELATIONSHIPS BETWEEN THE MARKET INDICES OF THE UNITED STATES AND THE GULF COOPERATION COUNCIL COUNTRIES" رسالة ماجستير. California State University, San Bernardino، سان برناردينو، 2008. مسترجع من http://search.mandumah.com/Record/619404