A. F. J. Klijn,
“Baptism in the Acts of Thomas”, in
Studies on Syrian Baptismal Rites,
J. Vellian, Ed. Kottayam: C.M.S. Press, 1973, pp. 57-62.
R. van den Broek,
“Der Brief des Jakobus an Quadratus und das Problem der judenchristlichen Bischöfe von Jerusalem (Eusebius, HE IV, 5, 1-3)”, in
Text and Testimony. Essays on New Testament and Apocryphal Literature in Honour of A.F.J. Klijn,
T. Baarda and Klijn, A. F. J., Eds. Kampen: J.H. Kok, 1988, pp. 56-65.