W. Bergsma, “A.F. Mellink, Documenta Anabaptistica Neerlandica. Amsterdam (1531-1536), V; I.B. Horst, The Dutch dissenters. A critical companion to their history and ideas. With a bibliographical survey of recent research pertaining to early reformation in the Netherlands; G. Morsink, Joannes Anastasius Veluanus. Jan Gerritsz. Versteghe. Levensloop en ontwikkelingsgang”, BMGN-LCHR, vol. 108, no. 2, pp. 256–259, Jan. 1993.