APA (7th ed.) Citation

Chesterton, G. K. (1937). The man who was Thursday: A nightmare. Penguin Books.

Chicago Style (17th ed.) Citation

Chesterton, G. K. The Man Who Was Thursday: A Nightmare. Harmondsworth, Inglaterra: Penguin Books, 1937.

MLA (8th ed.) Citation

Chesterton, G. K. The Man Who Was Thursday: A Nightmare. Penguin Books, 1937.

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