APA (7th ed.) Citation

Clark, J., & Clark, M. (2010). Opening Zion: A scrapbook of the National Park's first official tourists. Bonneville Books.

Chicago Style (17th ed.) Citation

Clark, John, and Melissa Clark. Opening Zion: A Scrapbook of the National Park's First Official Tourists. Salt Lake City: Bonneville Books, 2010.

MLA (9th ed.) Citation

Clark, John, and Melissa Clark. Opening Zion: A Scrapbook of the National Park's First Official Tourists. Bonneville Books, 2010.