Ferguson, Margaretha, author
Nijgh & van Ditmar, 1992
Buku Teks
Perpustakaan Nasional RI, 1999
Buku Referensi
Engelberts, Pieter Nicolaas
B. Van Der Land, 1884
Buku Teks
Spear, Percival, author
The University of Michigan Press, 1961
Buku Teks
Biro Klasifikasi Indonesia, 2004
Buku Referensi