Braun, C. A., author
NIVE, 1986
Buku Referensi
Pinkhof, H.
De Erven F. Bohn, 1923
Buku Teks
by H. van Gorp ... [and others]
Wolters-Noordhoff, 1991
Buku Teks
Hutauruk, M., author
Erlangga, 1987
Buku Teks
Vrisekoop, Michel C, author
Coutinho, 2001
Buku Teks