APA (7th ed.) Citation

Bridwell, M. M. (1971). The story of Mammoth Cave National Park, Kentucky: A brief history ([11th ed.].). [The author].

Chicago Style (17th ed.) Citation

Bridwell, Margaret M. The Story of Mammoth Cave National Park, Kentucky: A Brief History. [11th ed.]. [Mammoth Cave?]: [The author], 1971.

MLA (9th ed.) Citation

Bridwell, Margaret M. The Story of Mammoth Cave National Park, Kentucky: A Brief History. [11th ed.]. [The author], 1971.