Moscow Foreign Languages Publishing House 1959
Buku Teks
Makarenko, A.S., author
Foreign Languages Publishing House, 1920
Buku Teks
Posener, Julius, author
MIT Pres, 1992
Buku Teks
Ackerman, Robert
Cambridge University Press , 1990
Buku Teks
Enan, M.A.
Ashraf, 1946
Buku Teks