Purdue University. Department of English. Journal of developmetnal reading. Department of English, Purdue University, c1957-1964.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Purdue University. Department of English. Journal of Developmetnal Reading. Lafayette, Ind: Department of English, Purdue University, c1957-1964.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Purdue University. Department of English. Journal of Developmetnal Reading. Department of English, Purdue University, c1957-1964.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.