McHugh, E., Aspinall, N., Leen, D., & Maebius, B. (2019). National parks: A kid's guide to America's parks, monuments, and landmarks (First revised edition.). Black Dog & Leventhal Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMcHugh, Erin, Neal Aspinall, Doug Leen, और Brian Maebius. National Parks: A Kid's Guide to America's Parks, Monuments, and Landmarks. First revised edition. New York: Black Dog & Leventhal Publishers, 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMcHugh, Erin, et al. National Parks: A Kid's Guide to America's Parks, Monuments, and Landmarks. First revised edition. Black Dog & Leventhal Publishers, 2019.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.