Calis, Piet
Meulenhoff Educatief, 1986
Buku Teks
Kossmann-Putto, J.A., author
Stichting Ons Erfdeel, 1987
Buku Teks
Flemish-Netherlands Foundation, 1997
Buku Referensi
Flemish-Netherlands Foundation, 1998
Buku Referensi
Flemish-Netherlands Foundation, 1995
Buku Referensi