National Association of Independent Schools. Independent school. [National Association of Independent Schools].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Association of Independent Schools. Independent School. [Boston]: [National Association of Independent Schools].
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Association of Independent Schools. Independent School. [National Association of Independent Schools].
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.