Foreign Languages Pub. House., 1971
Buku Teks
J. Dajawan
Pembaruan, 1960
Buku Teks
Khruschchev, N.S., author
Foreign Languages Publishing House, 1960
Buku Teks
Kellen, Konrad
Frederick A. Praeger, 1961
Buku Teks
Moo,Harriet L
Princeton University press, 1945
Buku Teks