Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
"Allen, William and Coloma, Carlos and Robert, Gruffydd, ca.ca. 1610",The Martyrdom of XII priests 1582 . The Attestation 1631 . Ynglynion ar y pader [1580-90],,Scolar Press,1970,"English recusant literature, 1558-1640",,,,https://cir.nii.ac.jp/crid/1130282270095732352