APA (7th ed.) Citation

Little, C. E. (1995). Discover America: The Smithsonian book of the national parks. Smithsonian Books.

Chicago Style (17th ed.) Citation

Little, Charles E. Discover America: The Smithsonian Book of the National Parks. Washington, D.C.: Smithsonian Books, 1995.

MLA (9th ed.) Citation

Little, Charles E. Discover America: The Smithsonian Book of the National Parks. Smithsonian Books, 1995.