[publisher not identified], [date of publication not identified]
Naskah
by J. M. A. Biesheuvel [and others]
Fietserband ENFB, 1990
Buku Teks
Michailov, Nikolai
Kedutaan Besar URSS, 1956
Buku Teks
Americana Corporation, 1977
Buku Referensi
Americana Corporation, 1964
Buku Referensi