National Language Research Institute. (1999). An Introduction to the National Language Research Institute: A sketch of its achievements (4th ed.). National Language Research Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Language Research Institute. An Introduction to the National Language Research Institute: A Sketch of Its Achievements. 4th ed. Japan: National Language Research Institute, 1999.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Language Research Institute. An Introduction to the National Language Research Institute: A Sketch of Its Achievements. 4th ed. National Language Research Institute, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.