American Association for Adult and Continuing Education. (1989). Adult learning. American Association for Adult & Continuing Education.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Association for Adult and Continuing Education. Adult Learning. Washington, D.C.: American Association for Adult & Continuing Education, 1989.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Association for Adult and Continuing Education. Adult Learning. American Association for Adult & Continuing Education, 1989.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.