White, M. (2016). Complete national parks of the United States: Featuring 400+ parks, monuments, battlefields, historic sites, scenic trails, recreation areas, and seashores (Updated second edition.). National Geographic Soc.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)White, Mel. Complete National Parks of the United States: Featuring 400+ Parks, Monuments, Battlefields, Historic Sites, Scenic Trails, Recreation Areas, and Seashores. Updated second edition. Washington, D.C. :: National Geographic Soc, 2016.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)White, Mel. Complete National Parks of the United States: Featuring 400+ Parks, Monuments, Battlefields, Historic Sites, Scenic Trails, Recreation Areas, and Seashores. Updated second edition. National Geographic Soc, 2016.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.