APA (7th ed.) Citation

Barrett, E. B. (1927). The Jesuit enigma. Jonathan Cape.

Chicago Style (17th ed.) Citation

Barrett, E. Boyd. The Jesuit Enigma. London: Jonathan Cape, 1927.

MLA (8th ed.) Citation

Barrett, E. Boyd. The Jesuit Enigma. Jonathan Cape, 1927.

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