National Council of Teachers of Mathematics & Hirsch, C. R. (1986). Activities for implementing curricular themes from the Agenda for action: Selections from the Mathematics Teacher. National Council of Teachers of Mathematics.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Council of Teachers of Mathematics و Christian R. Hirsch. Activities for Implementing Curricular Themes from the Agenda for Action: Selections from the Mathematics Teacher. Reston, VA: National Council of Teachers of Mathematics, 1986.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Council of Teachers of Mathematics و Christian R. Hirsch. Activities for Implementing Curricular Themes from the Agenda for Action: Selections from the Mathematics Teacher. National Council of Teachers of Mathematics, 1986.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.