Caraman, P. (1995). A study in friendship: Saint Robert Southwell and Henry Garnet. Institute of Jesuit Sources.
Chicago-referens (17:e uppl.)Caraman, Philip. A Study in Friendship: Saint Robert Southwell and Henry Garnet. Saint Louis, Mo: Institute of Jesuit Sources, 1995.
MLA-referens (8:e uppl.)Caraman, Philip. A Study in Friendship: Saint Robert Southwell and Henry Garnet. Institute of Jesuit Sources, 1995.
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