Goleman, D., & Cherniss, C. (2023). Optimal: How to sustain personal and organizational excellence every day (First edition.). Harper Business, an imprint of HarperCollins Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Goleman, Daniel, و Cary Cherniss. Optimal: How to Sustain Personal and Organizational Excellence Every Day. First edition. New York, NY: Harper Business, an imprint of HarperCollins Publishers, 2023.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Goleman, Daniel, و Cary Cherniss. Optimal: How to Sustain Personal and Organizational Excellence Every Day. First edition. Harper Business, an imprint of HarperCollins Publishers, 2023.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.