Janssens, Guy, author
ACCO, 2003
Buku Teks
Oerlemans, J.W., author
Bert Bakker, 1992
Buku Teks
Jansen, Wim, author
L.J. Veen, 2002
Buku Teks
Kramer, A.L.N., author
G. B. Van Goor Zonen, 1948
Buku Referensi
Kramer, A.L.N., author
GB Van Goor Zonen's, 1966
Buku Referensi