Poltorak, A.
Foreign Languages Publishing House,, [196-]
Buku Teks
Heydecker, Joe J.
: The World Publishing,, 1962
Buku Teks
2419, 1943
Buku Teks
Jackson, Robert Houghwout
Alfred A. Knopf, 1946
Buku Teks
Brandt, Karl
Stanfort University Press , 1953
Buku Teks