International Greek New Testament Project
A printed edition of the Papyrus witnesses to St John's Gospel
Elliott, W.J. and Parker, D.C. (edd.) The New Testament in Greek IV. The Gospel according to St John. Volume One: The Papyri Brill 1995, ISBN 9004 09940 9
A printed edition of the Majuscule witnesses to St John's Gospel
Schmid, U.B. with Elliott, W.J. and Parker, D.C. (edd.) The New Testament in Greek IV. The Gospel according to St John. Volume Two. The Majuscules Brill 2007, ISBN 978 90 04 16313 3 (available on the Brill website)
Papers from the Birmingham Colloquia on the the Textual Criticism of the New Testament
Taylor, D.G.K. (ed.) Studies in the Early Text of the Gospels and Acts. Papers from the First Birmingham Colloquium on the Textual Criticism of the New Testament (Texts and Studies 3.1) University of Birmingham Press 1999, ISBN 1902 45903 2
Houghton, H.A.G. and Parker, D.C. (edd.) Textual Variation: Theological and Social Tendencies? Papers from the Fifth Birmingham Colloquium on the Textual Criticism of the New Testament (Texts and Studies 3.6) Gorgias Press 2008, ISBN 978 1 59333 789 6
The Gospel of John in the Byzantine Tradition
Mullen, R.L. with Crisp, S. and Parker D.C. (edd.) The Gospel of John in the Byzantine Tradition Deutsche Bibelgesellschaft 2007, ISBN 978 3 438 05132 5
The Codex Sinaiticus Project
Online edition of the manuscript presented by The British Library, the National Library of Russia, St Catherine's Monastery and Leipzig Univeristy Library (available at www.codexsinaiticus.org).
New Testament transcripts
The New Testament transcripts site hosted at the Institut für Neutestamentliche Textforschung in Münster: http://nttranscripts.uni-muenster.de/