Zimmer, E. (2026). How a little becomes a lot: The art of small changes for a more meaningful life (First edition.). Harvest, an imprint of William Morrow.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zimmer, Eric. How a Little Becomes a Lot: The Art of Small Changes for a More Meaningful Life. First edition. New York, NY: Harvest, an imprint of William Morrow, 2026.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Zimmer, Eric. How a Little Becomes a Lot: The Art of Small Changes for a More Meaningful Life. First edition. Harvest, an imprint of William Morrow, 2026.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.