Gardiner, H. C. (1957). Edmund Campion: Hero of Gods underground. Vision Books.
Dyfyniad Arddull ChicagoGardiner, Harold C. Edmund Campion: Hero of Gods Underground. New York: Vision Books, 1957.
Dyfyniad MLAGardiner, Harold C. Edmund Campion: Hero of Gods Underground. Vision Books, 1957.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.