Ivanovna, Astaf`yeva Nina, author
Vyshejshaya Shkola, 1973
Buku Teks
Koester, Sola, author
Max Hueber Verlag, 1979
Buku Referensi
Bondarko, Aleksandr Vladimirovich, author
Nauk, 1971
Buku Referensi
Myuller, V.K., author
Sovetskaja-Entsiklopedija, 1969
Buku Referensi
Mironova, S.A., author
Gosudarstvennoe izdatel'stvo inostrannyx i natsional'nyx slovarej, 1958
Buku Referensi