Maytinskaya, Clara E.
Nauka, 1969
Buku Referensi
Potapova, Nina F.
Progress Publishers, [196-]
Buku Teks
Lusin, Natala
Baron's Education, 1992
Buku Referensi
Smirnitsky, A.I.
Higher School Publishing House, 1975
Buku Teks
Timberlake, Alan
Cambridge University Press, 2004
Buku Teks