[publisher not identified], [date of publication not identified]
Buku Klasik
[publisher not identified], [date of publication not identified]
Naskah
Brandes, Dr., author
G.C.T. Van Dorp, 1895
Buku Klasik
M. Ali Hasan, author
RajaGrafindo Persada, 2002
Buku Teks
Artikel Jurnal