Watuseke, F. S., author
[publisher not identified], 1985
Buku Referensi
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
Potgieter, E. J
L.J. Veen, [date of publication not identified]
Buku Teks
Helbach, E. A. van Nieuwenhoven
D Erven Bohn, 1974
Buku Teks