APA (7th ed.) Citation

Casteret, N. (1955). The darkness under the earth. Holt.

Chicago Style (17th ed.) Citation

Casteret, Norbert. The Darkness Under the Earth. New York: Holt, 1955.

MLA (9th ed.) Citation

Casteret, Norbert. The Darkness Under the Earth. Holt, 1955.

Warning: These citations may not always be 100% accurate.