(2019). Ultimate memory magic: The transformative program for sharper memory, mental clarity, and greater focus...at any age! / Jim Karol, with Michael Ross ; foreword by Daniel G. Amen.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ultimate Memory Magic: The Transformative Program for Sharper Memory, Mental Clarity, and Greater Focus...at Any Age! / Jim Karol, with Michael Ross ; Foreword by Daniel G. Amen. 2019.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ultimate Memory Magic: The Transformative Program for Sharper Memory, Mental Clarity, and Greater Focus...at Any Age! / Jim Karol, with Michael Ross ; Foreword by Daniel G. Amen. 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.