Vries, Jan de
Het Spectrum, 1991
Buku Teks
Bruggencate, K. Ten
J.B. Wolters-Groningen, [Date of publication not identified]
Buku Referensi
Geldern, I. Van
BIJ J. B. Wolters U. M., [date of publication not identified]
Buku Referensi
Gallas, K. R.
J. B. Wolters, [date of publication not identified]
Buku Referensi
Herckenrath, C. R. C.
J. B. Wolters U. M., [date of publication not identified]
Buku Referensi