Paeger Pub., 1975
Buku Teks
Foreign Languages Publishing House, 1962
Buku Teks
Riga, Liliana, 1962-, author
Cambridge University Press, 2012
Buku Teks
Wade, Rex A, author
Cambridge University Press, 2017
Buku Teks
Foreign Languages Publishing House, 1957
Buku Teks