Pogadaev, Victor, author
Gramedia Pustaka Utama, 2010
Buku Referensi
O`brien, M.A., author
Dover Publications, 1944
Buku Referensi
Wheeler, Marcus, author
Glarendon Press, 1984
Buku Referensi
Segal, Louis, author
Frederick A. Praeger, 1959
Buku Referensi
Blartner, Karl, author
Langenscheidt-Sprachwerke, 1929
Buku Referensi