Pinkhof, H.
De Erven F. Bohn, 1923
Buku Teks
Braun, C. A., author
NIVE, 1986
Buku Referensi
Kruyskamp, C., author
Van Goor Zonen, [date of publication not identified]
Buku Referensi
by H. van Gorp ... [and others]
Wolters-Noordhoff, 1991
Buku Teks
Hasselt, J. L. Van
Kemink and Zoon, 1876
Buku Referensi