McKnight, D. C. (2018). The power of zero: How to get to the 0% tax bracket and transform your retirement (Revised and updated.). Currency.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)McKnight, David C. The Power of Zero: How to Get to the 0% Tax Bracket and Transform Your Retirement. Revised and updated. New York: Currency, 2018.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)McKnight, David C. The Power of Zero: How to Get to the 0% Tax Bracket and Transform Your Retirement. Revised and updated. Currency, 2018.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.