National Association of State Directors of Teacher Education and Certification. (1968). English teacher preparation study. National Council of Teachers of English.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Association of State Directors of Teacher Education and Certification. English Teacher Preparation Study. Champaign, Ill.: National Council of Teachers of English, 1968.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)National Association of State Directors of Teacher Education and Certification. English Teacher Preparation Study. National Council of Teachers of English, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.