Batavia: Nam Tiong Boek handel, 1932
Buku Referensi
Umbgrove, J.H.F.
Cambridgeat the Univ. Press, 1949
Buku Teks
Borschberg, Peter, author
NUS Press, 2011
Buku Teks
Pols, Hans, author
Cambridge University Press, 2018
eBooks
Hellwig, Tineke, author
Netherlandic Press, 1994
Buku Teks