Witting, C. (1947). Let X be the murderer: A novel of detection. Hodder & Stoughton.
Chicago-viite (17. p.)Witting, Clifford. Let X Be the Murderer: A Novel of Detection. London: Hodder & Stoughton, 1947.
MLA-viite (8. p.)Witting, Clifford. Let X Be the Murderer: A Novel of Detection. Hodder & Stoughton, 1947.
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