Gardiner, H. C. (1957). Edmund Campion: Hero of Gods underground. Vision Books.
Chicago Style aipamenaGardiner, Harold C. Edmund Campion: Hero of Gods Underground. New York: Vision Books, 1957.
MLA aipamenaGardiner, Harold C. Edmund Campion: Hero of Gods Underground. Vision Books, 1957.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.