APA (7th ed.) Citation

Gardiner, H. C. (1957). Edmund Campion: Hero of Gods underground. Vision Books.

Chicago Style (17th ed.) Citation

Gardiner, Harold C. Edmund Campion: Hero of Gods Underground. New York: Vision Books, 1957.

MLA (8th ed.) Citation

Gardiner, Harold C. Edmund Campion: Hero of Gods Underground. Vision Books, 1957.