Association for Supervision and Curriculum Development, ebrary, Inc, & Jacobs, H. H. (2010). Curriculum 21: Essential education for a changing world. Association for Supervision and Curriculum Development.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Association for Supervision and Curriculum Development, Inc ebrary, و Heidi Hayes Jacobs. Curriculum 21: Essential Education for a Changing World. Alexandria, Va.: Association for Supervision and Curriculum Development, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Association for Supervision and Curriculum Development, et al. Curriculum 21: Essential Education for a Changing World. Association for Supervision and Curriculum Development, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.