APA (7th ed.) Citation

Huxley, T. H., & Eiseley, L. C. (1967). On a piece of chalk. Scribner.

Chicago Style (17th ed.) Citation

Huxley, Thomas Henry, and Loren C. Eiseley. On a Piece of Chalk. New York: Scribner, 1967.

MLA (9th ed.) Citation

Huxley, Thomas Henry, and Loren C. Eiseley. On a Piece of Chalk. Scribner, 1967.