Hellinga, Wytze
Meulenhoff, [date of publication not identified]
Buku Teks
Walbeehm, A.H.J.G., author
Boekhandel Visser, 1897
Buku Klasik
Stutterheim, Cornelis Ferdinand Petrus, 1903-, author
Universitaire Pers Leiden, 1971
Buku Teks
Kost, Heleen, author
Het Spectrum, 1990
Buku Referensi
editor, Alois Wierlacher ... [and others]
indicium Verlag Gmbh, 1975
Buku Referensi