Attenborough, D., Hughes, J., Harper, L., & Spetch, M. (2020). A life on our planet: My witness statement and a vision for the future (First American Edition.). Grand Central Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Attenborough, David, Jonnie Hughes, Lizzie Harper, و Meghan Spetch. A Life on Our Planet: My Witness Statement and a Vision for the Future. First American Edition. New York: Grand Central Publishing, 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Attenborough, David, et al. A Life on Our Planet: My Witness Statement and a Vision for the Future. First American Edition. Grand Central Publishing, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.