Schut, Engelbert: Incipiu[n]t colores retho[r]icales cu[m] co[n]corda[n]cijs g[ra]maticaliu[m] collecti p[er] magristu[m] venerabile[m] engelbertu[m] leydis. [Niederlande?] : [Drucker d. Haneron], 1470