APA (7th ed.) Citation

Carr, J. D. (1972). The unicorn murders. Tom Stacey Reprints Ltd.

Chicago Style (17th ed.) Citation

Carr, John Dickson. The Unicorn Murders. London (28 Maiden La., WC2E 7JP): Tom Stacey Reprints Ltd, 1972.

MLA (8th ed.) Citation

Carr, John Dickson. The Unicorn Murders. Tom Stacey Reprints Ltd, 1972.