Bonner, H. (2003). When bugs were big, plants were strange, and tetrapods stalked the earth: A cartoon prehistory of life before dinosaurs. National Geographic.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bonner, Hannah. When Bugs Were Big, Plants Were Strange, and Tetrapods Stalked the Earth: A Cartoon Prehistory of Life Before Dinosaurs. Washington, D.C.: National Geographic, 2003.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Bonner, Hannah. When Bugs Were Big, Plants Were Strange, and Tetrapods Stalked the Earth: A Cartoon Prehistory of Life Before Dinosaurs. National Geographic, 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.