Yogerst, J. R. (2022). 50 states, 500 campgrounds: Where to go, when to go, what to see, what to do. National Geographic.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रYogerst, Joseph R. 50 States, 500 Campgrounds: Where to Go, When to Go, What to See, What to Do. Washington, D.C.: National Geographic, 2022.
एमएलए (8वां संस्करण) प्रशस्ति पत्रYogerst, Joseph R. 50 States, 500 Campgrounds: Where to Go, When to Go, What to See, What to Do. National Geographic, 2022.
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