White, W. B. (2020). Caves and Karst of the Greenbrier Valley in West Virginia. 1st ed. 2018. Springer International Publishing.
শিকাগো স্টাইলে সাইটেশনWhite, William B. Caves and Karst of the Greenbrier Valley in West Virginia. 1st Ed. 2018. Springer International Publishing, 2020.
এমএলএ সাইটেশনWhite, William B. Caves and Karst of the Greenbrier Valley in West Virginia. 1st Ed. 2018. Springer International Publishing, 2020.
সতর্কবাণী: সাইটেশন সবসময় 100% নির্ভুল হতে পারে না.