Askov, E. N. (2003). Expanding access to adult literacy with online distance education. National Center for the Study of Adult Learning and Literacy.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Askov, Eunice N. Expanding Access to Adult Literacy with Online Distance Education. Cambridge, Mass.: National Center for the Study of Adult Learning and Literacy, 2003.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Askov, Eunice N. Expanding Access to Adult Literacy with Online Distance Education. National Center for the Study of Adult Learning and Literacy, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.