APA (7th ed.) Citation

Junior Ranger Program (United States. National Park Service). (2018). Herbert Hoover National Historic Site, Iowa: Junior Ranger activity book. Herbert Hoover National Historic Site.

Chicago Style (17th ed.) Citation

Junior Ranger Program (United States. National Park Service). Herbert Hoover National Historic Site, Iowa: Junior Ranger Activity Book. West Branch, Iowa: Herbert Hoover National Historic Site, 2018.

MLA (9th ed.) Citation

Junior Ranger Program (United States. National Park Service). Herbert Hoover National Historic Site, Iowa: Junior Ranger Activity Book. Herbert Hoover National Historic Site, 2018.