Consten des rekenboecks

Jan Ympyn, nieuwe instructie ende bewijs der Loffelijker consten des rekenboecks,
ende rekeninghe te houdene nae die Italiensche maniere . Antwerpen, Gillis Copyns van Diest, 1543.

It was Ympyn’s book that introduced double entry bookkeeping into Western Europe. In the Netherlands and England it was for a long time the model for late works on bookkeeping. It was written in 1537, because the specimen journal runs from 28th December 1536 to 31st august 1537.