edited by Sewerlyn Bialer
Westview Press, 1981
Buku Teks
Oxford University Press, 1975
Buku Teks
edited by Egbert Jahn
St Martin's Press, 1978
Buku Teks
Beloff, Max, author
Oxford University Press, 1947
Buku Teks
Foreign Languages Publishing House, 1962
Buku Teks