APA-viite

Yogerst, J. R. (2017). 50 states, 5,000 ideas: Where to go, when to go, what to see, what to do. Washington, D.C: National Geographic.

Chicago-tyylinen lähdeviittaus

Yogerst, Joseph R. 50 States, 5,000 Ideas: Where to Go, When to Go, What to See, What to Do. Washington, D.C: National Geographic, 2017.

MLA-viite

Yogerst, Joseph R. 50 States, 5,000 Ideas: Where to Go, When to Go, What to See, What to Do. Washington, D.C: National Geographic, 2017.

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