APA Style

Wallace, Edgar. (1951). The Door with seven locks . London: Hodder & Stoughton.

Chicago Style

Wallace, Edgar. The Door with seven locks. London: Hodder & Stoughton, 1951. Book.

MLA Style

Wallace, Edgar. The Door with seven locks. London: Hodder & Stoughton, 1951. Book.

Turabian Style

Wallace, Edgar. The Door with seven locks. London: Hodder & Stoughton, 1951. Book.