APA (7th ed.) Citation

Queen, E. (1972). The door between: A problem in deduction. V. Gollancz.

Chicago Style (17th ed.) Citation

Queen, Ellery. The Door Between: A Problem in Deduction. London: V. Gollancz, 1972.

MLA (8th ed.) Citation

Queen, Ellery. The Door Between: A Problem in Deduction. V. Gollancz, 1972.