Lewis, J. P. (2015). National Geographic book of nature poetry: More than 200 poems with photographs that float, zoom, and bloom! National Geographic Society.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lewis, J. Patrick. National Geographic Book of Nature Poetry: More than 200 Poems with Photographs That Float, Zoom, and Bloom! Washington, D.C.: National Geographic Society, 2015.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lewis, J. Patrick. National Geographic Book of Nature Poetry: More than 200 Poems with Photographs That Float, Zoom, and Bloom! National Geographic Society, 2015.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.