Adult Education Association of the United States of America. (1977). Lifelong learning: The adult years. Adult Education Association of the United States of America.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Adult Education Association of the United States of America. Lifelong Learning: The Adult Years. Washington, D.C: Adult Education Association of the United States of America, 1977.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Adult Education Association of the United States of America. Lifelong Learning: The Adult Years. Adult Education Association of the United States of America, 1977.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.