Marcell Dekker, 1979
Buku Referensi
Moscow: Novosti Press, 1977,
Buku Referensi
Zvorykin, A.A., author
UNESCO, 1977
Buku Teks
editor-in-chief M.V. Keldysh
Progress Publishers, [date of publication not identified]
Buku Teks
Foreign Languages Publishing House, 1956
Buku Teks