Coba jelasin Lihat pula dari Rylands Library Papyrus P52 dong

Nongbri, Brent (2005) "The Use and Abuse of P52: Papyrological Pitfalls in the Dating of the Fourth Gospel." Harvard Theological Review 98:23-52.

Roberts, C. H. (1936) "An Unpublished Fragment of the Fourth Gospel in the John Rylands Library.” Bulletin of the John Rylands Library 20:45-55.

Roberts, C. H. (1979) Manuscript, Society and Belief in Early Christian Egypt, OUP.

Schnelle, Udo (1998) The History and Theology of the New Testament Writings.

Tuckett, Christopher M. (2001) "P52 and Nomina Sacra." New Testament Studies'' 47:544-48.