El Naschie, M. S. On a General Theory for Quantum Gravity: Mohamed S. El Naschie. Sciences of the interface : proceedings of the International Symposium Sciences of the Interface, ZKM, Center for Art and Media, Karlsruhe Germany, May 18-21, 1999.(2001).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)El Naschie, Mohamed S. "On a General Theory for Quantum Gravity: Mohamed S. El Naschie." Sciences of the Interface : Proceedings of the International Symposium Sciences of the Interface, ZKM, Center for Art and Media, Karlsruhe Germany, May 18-21, 1999.(2001) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)El Naschie, Mohamed S. "On a General Theory for Quantum Gravity: Mohamed S. El Naschie." Sciences of the Interface : Proceedings of the International Symposium Sciences of the Interface, ZKM, Center for Art and Media, Karlsruhe Germany, May 18-21, 1999.(2001), .