Henryk Kupiszewski, "A hitherto unpublished Fragment of the Epistle to the Ephesians", William H. P. Hath, C. Bradford Welles, "The Harvad Theolog. Rev.", vol. 51, 1958, no 1 : [recenzja] , The Journal of Juristic Papyrology, 1962, 14, , s. 173