Roelans de Mechlinia, Cornelius :
Opusculum aegritudinum puerorum
[Louvain : Johann Veldener, about 1486-87]. – 4°. – ISTC ir00241000
Cambridge, University Library (GB). – Inc.5.F.2.7[3280.1-3] [00561755]
Roelans de Mechlinia, Cornelius : Opusculum aegritudinum puerorum . – Cambridge, University Library (GB). – Inc.5.F.2.7[3280.1-3] []