APA (7th ed.) Citation

Burroughs, E. R. (1930). Tarzan at the earth's core. Ace Pub. Corp..

Chicago Style (17th ed.) Citation

Burroughs, Edgar Rice. Tarzan at the Earth's Core. New York: Ace Pub. Corp., 1930.

MLA (9th ed.) Citation

Burroughs, Edgar Rice. Tarzan at the Earth's Core. Ace Pub. Corp., 1930.