APA (7th ed.) Citation

Henry, O. (1974). The unknown quantity, and other stories. Hodder & Stoughton.

Chicago Style (17th ed.) Citation

Henry, O. The Unknown Quantity, and Other Stories. London: Hodder & Stoughton, 1974.

MLA (8th ed.) Citation

Henry, O. The Unknown Quantity, and Other Stories. Hodder & Stoughton, 1974.

Warning: These citations may not always be 100% accurate.