APA (7th ed.) Citation

Beale, C. W. (1974). The secret of the earth. Arno Press.

Chicago Style (17th ed.) Citation

Beale, Charles Willing. The Secret of the Earth. New York: Arno Press, 1974.

MLA (9th ed.) Citation

Beale, Charles Willing. The Secret of the Earth. Arno Press, 1974.