World Intellectual Property Organization & Berne Convention for the Protection of Literary and Artistic Works (1971). (1996). Berne Convention for the Protection of Literary and Artistic Works: Paris Act of July 24, 1971 as amended on September 28, 1979. World Intellectual Property Organization.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)World Intellectual Property Organization و Berne Convention for the Protection of Literary and Artistic Works (1971). Berne Convention for the Protection of Literary and Artistic Works: Paris Act of July 24, 1971 as Amended on September 28, 1979. Geneva: World Intellectual Property Organization, 1996.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)World Intellectual Property Organization و Berne Convention for the Protection of Literary and Artistic Works (1971). Berne Convention for the Protection of Literary and Artistic Works: Paris Act of July 24, 1971 as Amended on September 28, 1979. World Intellectual Property Organization, 1996.