Oldendorff, A.
F. W. Dekoning-Uitgever, [date of publication not identified]
Buku Teks
Kolff, G. H. van der, author
Bhratara, 1974
Buku Teks
E. C. Winardi
Alumni, 1972
Buku Klasik
Schmacke, Ernst, author
Econ Verlag, 1975
Buku Referensi
Wagemann, Ernst
Leo Lehnen Verlag Gmbh, 1951
Buku Teks