Frenkel, B. S., author
Katholieke Hogeschool, 1986
Buku Teks
Rood, M.G.
Gouda Quint bv, 1996
Buku Teks
editor, Alois Wierlacher ... [and others]
indicium Verlag Gmbh, 1975
Buku Referensi
Gobardhan-Rambocus, Lila, author
Walburg Pers, 2001
Buku Teks
editor, Alois Wierlacher ... [and others]
Indicium Verlag Gmbh, 1990
Buku Referensi