Allen, M. G., & Stevens, R. L. (1998). Middle grades social studies: Teaching and learning for active and responsible citizenship (2a. ed.). Allyn and Bacon.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Allen, Michael G., و Robert L. Stevens. Middle Grades Social Studies: Teaching and Learning for Active and Responsible Citizenship. 2a. ed. Boston: Allyn and Bacon, 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Allen, Michael G., و Robert L. Stevens. Middle Grades Social Studies: Teaching and Learning for Active and Responsible Citizenship. 2a. ed. Allyn and Bacon, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.