APA (7th ed.) Citation

Matthews, L. E., & Biddix, B. (2021). Caves of the North Cumberland Plateau. National Speleological Society.

Chicago Style (17th ed.) Citation

Matthews, Larry E., and Bob Biddix. Caves of the North Cumberland Plateau. Huntsville, Alabama, USA: National Speleological Society, 2021.

MLA (9th ed.) Citation

Matthews, Larry E., and Bob Biddix. Caves of the North Cumberland Plateau. National Speleological Society, 2021.